Human Rights Protocol ConsiderationsInternet ResearchGroupTask Force (IRTF) N. ten OeverIntended status:Request for Comments: 8280 ARTICLE 19 Category: Informational C. CathExpires: January 17, 2018ISSN: 2070-1721 Oxford Internet InstituteJuly 16,October 2017 Research into Human Rights Protocol Considerationsdraft-irtf-hrpc-research-14Abstract This document aims to propose guidelines for human rights considerations, similar to the work done on the guidelines for privacy considerations[RFC6973]. If you want to apply this work to your own, you can directly go to Section 6.(RFC 6973). Therestother parts ofthethis documentexplainsexplain the background of the guidelines and how they were developed. This document isnot an Internet Standards Track specification; it is published for informational purposes. This informational document has consensus for publication from the Internet Research Task Force (IRTF) Human Right Protocol Considerations Research Group. It isthe first milestone in alonger termlonger-term researcheffort andeffort. It has been reviewedbothby theresearch groupHuman Rights Protocol Considerations (HRPC) Research Group and also by individuals from outside the research group.Many of the topics discussed are still under discussion in the research group and will be subjects of continuing research.Status of This Memo ThisInternet-Draftdocument issubmitted in full conformance withnot an Internet Standards Track specification; it is published for informational purposes. This document is a product of theprovisionsInternet Research Task Force (IRTF). The IRTF publishes the results ofBCP 78Internet-related research andBCP 79. Internet-Drafts are working documentsdevelopment activities. These results might not be suitable for deployment. This RFC represents the consensus of the Human Rights Protocol Considerations Research Group of the InternetEngineeringResearch Task Force(IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid(IRTF). Documents approved for publication by the IRSG are not amaximumcandidate for any level of Internet Standard; see Section 2 of RFC 7841. Information about the current status ofsix monthsthis document, any errata, and how to provide feedback on it may beupdated, replaced, or obsoleted by other documentsobtained atany time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on January 17, 2018.https://www.rfc-editor.org/info/rfc8280. Copyright Notice Copyright (c) 2017 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents(http://trustee.ietf.org/license-info)(https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document.Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. TableTable of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . 3....................................................4 2. Vocabularyused . . . . . . . . . . . . . . . . . . . . . . . 5Used .................................................6 3. Research Questions. . . . . . . . . . . . . . . . . . . . . 11.............................................12 4. Literature and Discussion Review. . . . . . . . . . . . . . 11...............................12 5. Methodology. . . . . . . . . . . . . . . . . . . . . . . . . 14....................................................15 5.1. Data Sources. . . . . . . . . . . . . . . . . . . . . . 15..............................................17 5.1.1. DiscourseanalysisAnalysis of RFCs. . . . . . . . . . . . . 16.........................17 5.1.2. Interviews withmembersMembers of the IETFcommunity . . . . 16Community ......17 5.1.3. ParticipantobservationObservation in Working Groups. . . . . . 16..........17 5.2. Dataanalysis strategies . . . . . . . . . . . . . . . . 16Analysis Strategies ..................................18 5.2.1. IdentifyingqualitiesQualities oftechnical concepts that relateTechnical Concepts That Relate tohuman rights . . . . . . . . . . . . . . . 16Human Rights ........................18 5.2.2. Relatinghuman rightsHuman Rights totechnical concepts . . . . . 18Technical Concepts ........20 5.2.3.Map casesMapping Cases ofprotocols, implementationsProtocols, Implementations, andnetworking paradigms that adversely impact human rightsNetworking Paradigms That Adversely Impact Human Rights orare enablers thereof . . . . . . . . . . . 21Are Enablers Thereof .....................21 6. Model fordeveloping human rights protocol considerations . . 39Developing Human Rights Protocol Considerations ......40 6.1. Humanrights threats . . . . . . . . . . . . . . . . . . 39Rights Threats ......................................40 6.2. Guidelines forhuman rights considerations . . . . . . . 41Human Rights Considerations ................42 6.2.1. Connectivity. . . . . . . . . . . . . . . . . . . . 41.......................................43 6.2.2. Privacy. . . . . . . . . . . . . . . . . . . . . . . 42............................................43 6.2.3. Contentagnosticism . . . . . . . . . . . . . . . . . 43Agnosticism ................................44 6.2.4. Security. . . . . . . . . . . . . . . . . . . . . . 43...........................................45 6.2.5. Internationalization. . . . . . . . . . . . . . . . 44...............................46 6.2.6. Censorshipresistance . . . . . . . . . . . . . . . . 45Resistance ..............................47 6.2.7. Open Standards. . . . . . . . . . . . . . . . . . . 46.....................................48 6.2.8. Heterogeneity Support. . . . . . . . . . . . . . . . 47..............................50 6.2.9. Anonymity. . . . . . . . . . . . . . . . . . . . . . 48..........................................51 6.2.10. Pseudonymity. . . . . . . . . . . . . . . . . . . . 49......................................51 6.2.11. Accessibility. . . . . . . . . . . . . . . . . . . . 50.....................................53 6.2.12. Localization. . . . . . . . . . . . . . . . . . . . 50......................................53 6.2.13. Decentralization. . . . . . . . . . . . . . . . . . 51..................................54 6.2.14. Reliability. . . . . . . . . . . . . . . . . . . . . 52.......................................55 6.2.15. Confidentiality. . . . . . . . . . . . . . . . . . . 53...................................56 6.2.16. Integrity. . . . . . . . . . . . . . . . . . . . . . 54.........................................58 6.2.17. Authenticity. . . . . . . . . . . . . . . . . . . . 54......................................59 6.2.18. Adaptability. . . . . . . . . . . . . . . . . . . . 55......................................60 6.2.19. Outcome Transparency. . . . . . . . . . . . . . . . 56..............................61 7.Document Status . . . . . . . . . . . . . . . . . . . . . . . 56 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 57 9.Security Considerations. . . . . . . . . . . . . . . . . . . 57 10.........................................61 8. IANA Considerations. . . . . . . . . . . . . . . . . . . . . 58 11.............................................61 9. Research Group Information. . . . . . . . . . . . . . . . . 58 12. References . . . . . . . . . . . . . . . . . . . . . . . . . 58 12.1......................................62 10. Informative References. . . . . . . . . . . . . . . . . 58 12.2. URIs . . . . . . . . . . . . . . . . . . . . . . . . . . 74........................................62 Acknowledgements ..................................................80 Authors' Addresses. . . . . . . . . . . . . . . . . . . . . . . 74................................................81 1. Introduction "There's a freedom about the Internet: As long as we accept the rules of sending packets around, we can send packets containing anything to anywhere." [Berners-Lee] "The Internet isn't value-neutral, and neither is the IETF." [RFC3935] Theevergrowingever-growing interconnectedness of the Internet and society increases the impact of the Internet on the lives of individuals. Because of this, the design and development of the Internet infrastructure alsohashave a growing impact on society. This has led to a broad recognition that human rights [UDHR] [ICCPR] [ICESCR] have a role in the development and management of the Internet[HRC2012][UNGA2013] [NETmundial]. It has also been argued that the Internet should be strengthened asa human rightsan enabling environment for human rights [Brown]. This document aims to (1) expose therelationrelationship between protocols and human rights, (2) propose possible guidelines to protect the Internet asa human-rights-enablingan enabling environment for human rights in future protocol development, in a manner similar to the work done forPrivacy Considerations inprivacy considerations [RFC6973], andto(3) increase theawarenessawareness, in both the human rights community and the technicalcommunity oncommunity, of the importance of the technical workings of the Internet and its impact on human rights. Document authors who want to apply this work to their own can go directly to Section 6 of this document. Open,securesecure, and reliable connectivity is necessary (although not sufficient) to exercise human rights such as freedom of expression and freedom of association [FOC], as defined in the Universal Declaration of Human Rights [UDHR]. The purpose of the Internet is to be a global network of networks that provides unfettered connectivity to allusersusers, and for any content [RFC1958]. This objective of stimulating global connectivity contributes to the Internet's role as an enabler of human rights. The Internet has given people a platform to exchangeopinions, gather information,opinions and gather information; it has enabled people of different backgrounds and genders to participate in the publicdebate,debate; it has also allowed people to congregate and organize. Next to that, the strong commitment to security [RFC1984] [RFC3365] and privacy [RFC6973] [RFC7258] in the Internet's architectural designcontributecontributes to the strengthening of the Internet asa human rightsan enablingenvironment.environment for human rights. One could even argue that the Internet is not only an enabler of humanrights,rights but that human rights lie at thebasisbase of, and are ingrained in, the architecture of the networks that make up the Internet. Internet connectivity increases the capacity for individuals to exercise theirrights,rights; the core of theInternet,Internet -- its architectural design -- is therefore closely intertwined with the human rights framework [CathFloridi]. The quintessential link between the Internet's infrastructure and human rights has been argued by many.[Bless][Bless1], forinstanceinstance, arguesthat, 'tothat "to a certain extent, the Internet and its protocols have already facilitated the realization of human rights, e.g., the freedom of assembly and expression. In contrast, measures of censorship and pervasive surveillance violate fundamental humanrights.' [Denardis15]rights." [DeNardis15] argues that'Since"Since the first hints of Internet commercialization and internationalization, the IETF has supported strong security in protocol design and has sometimes served as a force resisting protocol-enabled surveillancefeatures.'features." By doing so, the IETF enabled the manifestation of the right to privacy, through the Internet's infrastructure. Additionally, access to freely available information gives people access to knowledge that enables them to help satisfy other humanrights,rights; assuchsuch, the Internet increasingly becomes apre-conditionprecondition for human rights rather than a supplement. Human rights can be in conflict with each other, such as the right to freedom of expression and the right to privacy. In suchcasescases, the different affected rights need to be balanced.In order toTo dothisthis, it is crucial that therightsimpacts on rights are clearly documented in order to mitigatethepotential harm.MakingThis research aims to ultimately contribute to making that process tangible and practical for protocoldevelopers is what this research aims to ultimately contribute to.developers. Technology can never be fully equated with a human right. Whereas a specific technology might be a strong enabler of a specific human right, it might have an adverse impact on another human right. In thiscasecase, decisions on design and deployment need to take this into account. The open nature of the initial technical design and its open standards, as well as developments like open source, fostered freedom of communication. What emerged was a network of networks that could enable everyone to connect and to exchange data,informationinformation, and code. For many, enabling such connections became a core value.HoweverHowever, as the scale and the commercialization of the Internet grew, topics like access,rightsrights, and connectivityarehave been forced to compete with other values. Therefore, importanthuman rights enablingcharacteristics of the Internet that enable human rights might be degraded if they're not properly defined,describeddescribed, and protected as such.And, the other way around,Conversely, not protectinghuman right enablingcharacteristics that enable human rights could also result in (partial) loss of functionality and connectivity,andalong with other inherent parts of the Internet's architecture of networks. New protocols, particularly those that upgrade the core infrastructure of the network, should be designed to continue to enable fundamental human rights. The IETF has produced guidelines and procedures to ensure and galvanize the privacy ofindidualsindividuals and security of the network in protocol development. This document aims to explore the possibility ofthe development ofdeveloping similar procedures for guidelines for human rights considerations to ensure that protocols developed in the IETF do not have an adverse impact on the realization of human rights on the Internet. By carefully considering the answers to the questions posed intheSection 6partof this document, document authors should be (1) able to produce a comprehensive analysis that can serve as the basis for discussion on whether the protocol adequately protects against specific human rightsthreats,threats and (2) potentiallystimulate authorsstimulated to think about alternative design choices.2. Vocabulary used InThis document was developed within thediscussionframework ofhuman rights and Internet architecture conceptsthe Human Rights Protocol Considerations (HRPC) Research Group, based on discussions on the HRPC mailing list (Section 9); this document was also extensively discussed during HRPC sessions. This document has received eleven in-depth reviews on the mailing list, and it received many comments from inside and outside the IRTF and IETF communities. 2. Vocabulary Used In the discussion of human rights and Internet architecture, concepts developed in computer science, networking, law,policy-makingpolicy-making, and advocacy are coming together[Dutton],[Kaye],[Franklin],[Dutton] [Kaye] [Franklin] [RFC1958]. The same concepts might have a very different meaning and implications in other areas of expertise. In order to foster a constructive interdisciplinarydebate,debate and minimize differences in interpretation, the following glossary isprovided, buildingprovided. It builds as much as possible on existingdefinitions, and where thesedefinitions; when definitions were not available in IETF documents, definitionshave been developed. Accessibility Fullwere taken from other Standards Development Organizations (SDOs) or academic literature. Accessibility: "Full InternetConnectivityConnectivity", as described in[RFC4084][RFC4084], to provide unfettered access to theInternetInternet. The design of protocols,servicesservices, orimplementationimplementations that provide an enabling environment for people with disabilities. The ability to receive information available on theInternet AnonymityInternet. Anonymity: The condition of an identity being unknown orconcealed. [RFC4949] Anonymousconcealed [RFC4949]. Anonymous: A state of an individual in which an observer or attacker cannot identify the individual within a set of other individuals (the anonymityset). [RFC6973] Authenticityset) [RFC6973]. Authenticity: The property of being genuine and able to be verified and betrusted. [RFC4949] Blocking thetrusted [RFC4949]. Blocking: The practice of preventing access to resources in the aggregate [RFC7754]. Both blocking and filtering can be implemented at the level of "services" (web hosting or video streaming, for example) or at the level of particular"content." [RFC7754] Censorship technical"content" [RFC7754]. Censorship: Technical mechanisms,that includeincluding both blocking and filtering, that certain political or private actors around the world use to block or degrade Internet traffic. For further details on the various elements of Internetcensorshipcensorship, see[hall][Hall]. Censorshipresistanceresistance: Methods and measures to mitigate Internet censorship.ConfidentialityConfidentiality: The property that data is not disclosed to system entities unless they have been authorized to know thedata.data [RFC4949].ConnectivityConnectivity: The extent to which a device or network is able to reach other devices or networks to exchange data. The Internet is the tool for providing global connectivity [RFC1958]. Different types of connectivity are further specified in [RFC4084]. Thecombination of theend-to-end principle, interoperability, distributed architecture, resilience,reliabilityreliability, and robustnessarein combination constitute the enabling factors that result in connectivitytoto, andonon, the Internet. Contentagnosticismagnosticism: Treating network traffic identically regardless of content.DecentralizedDecentralized: Implementation or deployment of standards,protocolsprotocols, or systems without one single point of control.End-to-EndEnd-to-end principle: The principle that application-specific functions should not be embedded into the network and thus stay at theend-points: inendpoints. In many cases, especially when dealing with failures, the right decisions can only be made with the correspondingapplication- specificapplication-specific knowledge, which is available atthe end-pointsendpoints not in the network. The end-to-end principle is one of the key architectural guidelines of the Internet. The argument in favor of theend-to- endend-to-end approach to system design is laid out in the fundamentalpaperpapers by Saltzer, Reed, and Clark [Saltzer] [Clark]. Init,these papers, the authors argue in favor of radical simplification:systemssystem designers should only build the essential and shared functions into the network, as most functions can only be implemented at networkend points.endpoints. Building features into the network for the benefit of certainapplications,applications will come at the expense of others. As such,as ain general system designers should attempt to steer clear of building anything into the network that is not a bare necessity for its functioning. Following the end-to-end principle is crucial for innovation, as it makes innovation at the edges possible without having to make changes to the network, and it protects the robustness of the network.Various[RFC2775] further elaborates on various aspects of end-to-endconnectivity are further elaborated on in [RFC2775]. Federationconnectivity. Federation: The possibility of connecting autonomous and possibly centralized systems into a single system without a central authority.Filtering theFiltering: The practice of preventing access to specific resources within an aggregate [RFC7754].Heterogeneity TheHeterogeneity: "The Internet is characterized by heterogeneity on many levels: devices and nodes, router scheduling algorithms and queue management mechanisms, routing protocols, levels of multiplexing, protocol versions and implementations, underlying link layers (e.g., point-to-point, multi-access links, wireless, FDDI, etc.), in the traffic mix and in the levels of congestion at different times and places. Moreover, as the Internet is composed ofindependentautonomous organizations andInternetinternet service providers, each with their own separate policyconcerns,thereconcerns, there is a large heterogeneity of administrative domains and pricingstructures.structures." [FIArch] As a result, per [FIArch], the heterogeneity principle proposed in [RFC1958] needs to be supported by design.[FIArch] Human rightsHumanrights are principlesrights: Principles and norms that are indivisible, interrelated, unalienable, universal, and mutuallyreinforcing thatreinforcing. Human rights have been codified in national and international bodies of law. The Universal Declaration of Human Rights [UDHR] is the most well-known document in the history of human rights. Theapirationsaspirations fromthis documents[UDHR] were later codified into treaties such as the International Covenant on Civil and Political Rights [ICCPR] and the International Covenant on Economic, Social and Cultural Rights [ICESCR], after which signatory countries were obliged to reflect them in their national bodies of law. There is also a broad recognition that not only states haveanobligationsvis a visvis-a-vis human rights, but non-state actors dosoas well.IntegrityIntegrity: The property that data has not been changed, destroyed, or lost in an unauthorized or accidentalmanner.manner [RFC4949].Interoperable A property of a documented standard or protocol which allows different independent implementations to work with each other without any restriction on functionality.Internationalization(i18n)(i18n): The practice of making protocols, standards, and implementations usable in different languages and scripts (seeLocalization).Section 6.2.12 ("Localization")). "In the IETF,"internationalization"'internationalization' means to add or improve the handling of non-ASCII text in a protocol" [RFC6365]. A different perspective, more appropriate to protocols that are designed for global use from the beginning, is the definition used byW3C:the World Wide Web Consortium (W3C) [W3Ci18nDef]: "Internationalization is the design and development of a product, application or document content that enables easy localization for target audiences that vary in culture, region, or language."[W3Ci18nDef]Many protocols that handle text only handle one charset(US- ASCII),(US-ASCII), or they leave the question of encoding up to local guesswork (which leads, of course, to interoperability problems) [RFC3536]. If multiple charsets are permitted, they must be explicitly identified [RFC2277]. Adding non-ASCII text to a protocol allows the protocol to handle more scripts, hopefully allof the ones usefulscripts in use in the world. In today's world, that is normally best accomplished by allowing Unicode encoded in UTF-8 only, thereby shifting conversion issues away from ad hoc choices. Interoperable: A property of a documented standard or protocol that allows different independent implementations to work with each other without any restriction on functionality. Localization(l10n)(l10n): The practice of translating an implementation to make it functional in a specific language or for users in a specific locale (seeInternationalization). (cfSection 6.2.5 ("Internationalization")). (cf. [RFC6365]): The process of adapting an internationalized application platform or application to a specific cultural environment. In localization, the same semantics are preserved while the syntax may bechanged. [FRAMEWORK]changed [FRAMEWORK]. Localization is the act of tailoring an application for a differentlanguage or scriptlanguage, script, or culture. Some internationalized applications can handle a wide variety of languages. Typical users only understand a small number of languages, so the program must be tailored to interact with users in just the languages they know. The major work of localization is translating the user interface and documentation. Localization involves not only changing the languageinteraction,interaction but also other relevantchangeschanges, such as display of numbers, dates, currency, and so on. The better internationalized an application is, the easier it is to localize it for a particular language andcharacter encodingcharacter-encoding scheme. Openstandardsstandards: Conform with[RFC2026]: Various[RFC2026], which states the following: "Various national and international standards bodies, such as ANSI, ISO, IEEE, andITU- T,ITU-T, develop a variety of protocol and service specifications that are similar to Technical Specifications defined here. National and international groups also publish"implementors' agreements"'implementors' agreements' that are analogous to Applicability Statements, capturing a body ofimplementation-specificimplementation- specific detail concerned with the practical application of their standards. All of these are considered to be"open'open externalstandards"standards' for the purposes of the Internet StandardsProcess. OpennessProcess." Openness: Absence of centralized points of control- a-- "a feature that is assumed to make it easy for new users to join and new uses tounfoldunfold" [Brown]. Permissionlessinnovationinnovation: The freedom and ability to freely create and deploy new protocols on top of the communications constructs that currently exist.PrivacyPrivacy: The right of an entity (normally a person), actinginon its own behalf, to determine the degree to which it will interact with its environment, including the degree to which the entity is willing to share its personal information withothers. [RFC4949]others [RFC4949]. The right of individuals to control or influence what information related to them may be collected andstoredstored, and by whom and to whom that information may be disclosed. Privacy is a broad concept relating to the protection of individual or group autonomy and the relationship between an individual or group and society, including government,companiescompanies, and private individuals. It is often summarized as "the right to be leftalone"alone", but it encompasses a wide range ofrightsrights, including protections from intrusions into family and home life, control of sexual and reproductive rights, and communications secrecy. It is commonly recognized as a core right that underpins human dignity and other values such as freedom of association and freedom of speech. The right to privacy is also recognized in nearly every national constitution and in most international human rights treaties. It has been adjudicated uponbothby both international and regional bodies. The right to privacy is also legally protected at the national level through provisions in civil and/or criminal codes.Reliability Reliability ensuresReliability: Ensures that a protocol will execute its function consistently as described and function without unexpectedresult.results. A system that is reliable degenerates gracefully and will have a documented way to announce degradation. It also has mechanisms to recover from failuregracefully, andgracefully and, if applicable, allow for partial healing [dict].ResilienceResilience: The maintaining of dependability and performance in the face of unanticipated changes and circumstances [Meyer].RobustnessRobustness: The resistance of protocols and their implementations to errors, and resistance to involuntary,legallegal, or malicious attempts to disruptits modetheir modes ofoperations. [RFC0760] [RFC0791] [RFC0793]operation [RFC760] [RFC791] [RFC793] [RFC1122].OrOr, framed more positively, a system can provide functionality consistently and without errors despite involuntary,legallegal, or malicious attempts to disrupt its mode ofoperations. Scalabilityoperation. Scalability: The ability to handle increased or decreased system parameters(e.g., number(number ofend-systems,end systems, users, data flows, routingentries.entries, etc.) predictably within defined expectations. There should be a clear definition of its scope and applicability. The limits of a system's scalability should be defined. Growth or shrinkage of these parameters is typically considered by orders of magnitude. Strong encryption /cryptographycryptography: Used to describe a cryptographic algorithm that would require a large amount of computational power to defeatit.it [RFC4949]. In the modern usage of the definition'strong encryption'of "strong encryption", this refers to an amount of computing powercurrentcurrently not available, not even to major state-level actors.TransparencyTransparency: In thiscontext transparency iscontext, linked to the comprehensibility of a protocol in relation to the choices it makes forboth user andusers, protocoldevelopersdevelopers, andimplementersimplementers, and to its outcome.outcome transparency,Outcome transparency is linked to the comprehensibility of the effects of a protocol in relation to the choices it makes forboth user andusers, protocoldevelopersdevelopers, and implementers, including the comprehensibility of possible unintended consequences of protocol choices(e.g.(e.g., lack of authenticity may lead to lack of integrity and negativeexternalities)externalities). 3. Research Questions The Human Rights Protocol Considerations (HRPC) Research Group(hrpc)in the Internet ResearchTaskforceTask Force (IRTF) embarked on its mission to answer the following twoquestionsquestions, which are also the main two questionswhichthat thisdocumentsdocument seeks to answer: 1. How can Internet protocols and standards impact human rights,eitherby either enabling them orbycreating a restrictive environment? 2. Can guidelines be developed to improve informed and transparentdecision makingdecision-making about the potentialhuman rightsimpact ofprotocols?protocols on human rights? 4. Literature and Discussion Review Protocols and standards are regularly seen as merely performing technical functions. However, these protocols and standards do not exist outside of their technicalcontextcontext, nor do they exist outside of their political, historical, economic,legallegal, or cultural context. This is best exemplified by the way in which some Internet processes and protocols have become part and parcel of political processes and public policies: one only has to look at the IANA transition,the RFC on pervasive monitoring[RFC7258] ("Pervasive Monitoring Is an Attack"), or global innovationpolicypolicy, for concrete examples[Denardis15].[DeNardis15]. According to[Abbate]:[Abbate], "protocols are politics by othermeans".means." This statement would probably not garner IETF consensus, but it nonethelessconfersreveals that protocols are based ondecision making,decision-making, most often by humans. In thisprocessprocess, the values and ideas about the role that a particular technology should perform in societyisare embedded into the design.OftenOften, these design decisions arepart pure-technical,partly "purely technical" andpartpartly inspired by a certain world view of how technology should function that is inspired by personal,corporatecorporate, and political views. Within the community of IETFparticipantsparticipants, there is a strong desire to solve technical problems and to minimize engagement with political processes andnon-protocol relatednon-protocol-related political issues. Since the late1990's1990s, a burgeoning group of academics and practitioners researched questions surrounding the societal impact of protocols,andas well as the politics of protocols. These studies vary in focus and scope: some focus on specific standards[Davidsonetal] [Musiani],[Davidson-etal] [Musiani]; others look into the political, legal,commercialcommercial, or social impact of protocols [BrownMarsden][Lessig], [Mueller][Lessig] [Mueller]; and yet others look at how the engineers' personal set of values get translated into technology [Abbate] [CathFloridi][Denardis15][DeNardis15] [WynsbergheMoura]. Commercial and political influences on the management of the Internet's infrastructure arewell-documentedwell documented in the academic literature and will thus not be discussedhere [Benkler] [Brownetal] [Denardis15] [Lessig] [Mueller]here; see [Benkler], [Brown-etal], [DeNardis15], [Lessig], [Mueller], and [Zittrain]. It is sufficient to say that the IETF community consistently tries to push back against the standardization of surveillance and certain other issues that negatively influenceend-users'an end user's experienceofof, and trustinin, the Internet[Denardis14].[DeNardis14]. The role that human rights play in engineering, infrastructuremaintenancemaintenance, and protocol design is much less clear. It is very important to understand how protocols and standards impact humanrights. Inrights, in particular becauseStandard Developing Organizations (SDOs)SDOs are increasingly becoming venues where social values (like human rights) are discussed, although often from a technological point of view. These SDOs are becoming a new focal point for discussions aboutvalues-by-design,"values by design" and the role of technical engineers in protecting or enabling human rights[Brownetal] [Clarketal] [Denardis14][Brown-etal] [Clark-etal] [DeNardis14] [CathFloridi] [Lessig] [Rachovitsa]. In the academicliteratureliterature, five clear positions can bediscerned,discerned in relation to the role of human rights in protocol design and how to account for these human rights in protocol development: Clark et al. [Clark-etal] argue that there is a need to'design fordesign "for variation inoutcome,outcome -- so that the outcome can be different in different places, and the tussle takes place within the design(...)(...)" [as]Rigid"Rigid designs will be broken; designs that permit variation will flex under pressure andsurvive [Clarketal].'survive." They hold that human rights should not be hard-coded into protocolsbecause offor three reasons:first,First, the rights in the UDHR are not absolute. Second, technology is not the only tool in the tussle over human rights. And last but not least, it is dangerous to make promises that can't be kept. The open nature of the Internet will never, they argue, be enough to fully protect individuals' human rights. Conversely, Brown et al.[Brownetal][Brown-etal] state that'some"some key, universal values--- of which the UDHR is the most legitimate expression--- should be baked into the architecture at designtime.'time." They argue that design choices have offlineconsequences,consequences and are able to shape the power positions of groups or individuals in society. As such, the individuals making these technical decisions have a moral obligation to take into account the impact of their decisions onsociety, andsociety and, byextensionextension, human rights. Brown etal recogniseal. recognize that values and the implementation of human rights vary across the globe. Yet they argue that all members of the United Nations have found'common"common agreement on the values proclaimed in the Universal Declaration of Human Rights. In looking for the most legitimate set of global values to embed in the future Internet architectures, the UDHR has the democratic assent of a significant fraction of the planet's population, through their elected representatives." The main disagreement between these two academic positions lies mostly in the questiononof whether (1) a particular value system should be embedded into the Internet's architectures orwhether(2) the architectures need to account for a varying set of values. A thirdposition thatposition, which is similar to that of Brown et al., is taken by[Broeders] who[Broeders], in which Broeders argues that'we"we must find ways to continue guaranteeing the overall integrity and functionality of the public core of theInternet.'Internet." He argues that the best way to do this is by declaring the backbone of the Internet--- which includes the TCP/IP protocol suite, numerous standards, the Domain Name System (DNS), and routing protocols--- a common public good. This is a different approach thanthatthose of[Clarketal][Clark-etal] and[Brownetal][Brown-etal] because Broeders does not suggest that social values should (or should not) be explicitly coded into the Internet, but rather that the existing infrastructure should be seen as an entity of public value. Bless and Orwat[Bless][Bless2] represent a fourth position. They argue that it is too early to make any definitiveclaims,claims but that there is a need for more careful analysis of the impact of protocol design choices on human rights. They also argue that it is important to search for solutions that'create"create awareness in the technical community about impact of design choices on socialvalues. And workvalues" and "work towards a methodology for co-design of technical and institutionalsystems.'systems." Berners-Lee and Halpin [BernersLeeHalpin] represent a fifth position. They argue that the Internet could lead to evennewnewer capacities, and these capacities may over time be viewed as new kinds of rights. For example, Internet access may be viewed as a human right in and of itself if it is taken to be apre-conditionprecondition for other rights, even if it could not have been predicted at thedeclaration oftime that theUNHDR afterUDHR was written (after the end of World War2.[BernersLeeHalpin].II). It is important to contextualize the technical discussion with the academic discussions on this issue. The academic discussionsalsoare also important todocumentdocument, as they inform the position of the authors of this document. TheResearch Groupsresearch group's position is that hard-coding human rights into protocols is complicated and changes with the context. At thispointpoint, it is difficult to say whether or not hard-coding human rights into protocols is wise or feasible. Additionally, there are many human rights, butthatnot all are relevant forICTs.information and communications technologies (ICTs). A partialcatalog, withcatalog (with references tosources,sources) of human rights related to ICTs can be foundherein [Hill2014]. Itis howeveris, however, important to make conscious and explicit design decisions that take into account the human rights protocol considerations guidelines developed below. This will contribute to the understanding of the impact that protocols can have on human rights,bothfor both developers andforusers. In addition, it contributes to (1) the careful consideration of the impact that a specific protocol might have on human rights andthat concrete(2) the dissemination of the practice of documenting protocol design decisionsare documented in the protocol.related to human rights. Pursuant to the principle of constant change,sincebecause the function and scope of the Internetevolves,evolve, so does the role of the IETF in developing standards. InternetstandardsStandards are adopted based onthe basis ofa series of criteria, including high technical quality, support by community consensus, and their overall benefit to the Internet. The latter calls for an assessment of the interests of all affected parties and the specifications' impact on the Internet's users. In this respect, the effective exercise of the human rights of the Internet users is a relevant consideration that needs to be appreciated in the standardization process insofar as it is directly linked to the reliability and core values of theInternet.Internet [RFC1958][RFC0226] [RFC3724][RFC2775] [RFC3439] [RFC3724]. This document details the steps taken in the research into human rights protocol considerations by thehrpc research groupHRPC Research Group to clarify therelationrelationship between technical concepts used in the IETF and human rights. This document sets out some preliminary steps and considerations for engineers to take into account when developing standards and protocols. 5. Methodology Mapping therelationrelationship between human rights,protocolsprotocols, and architectures is a new researchchallenge, whichchallenge that requires a good amount of interdisciplinary andcross organizationalcross-organizational cooperation to develop a consistent methodology. The methodological choices made in this document are based on thepolitical science-basedpolitical-science-based method of discourse analysis and ethnographic research methods [Cath]. This work departs from the assumption that language reflects the understanding of concepts.OrOr, as [Jabri] holds, policy documents are'social"social relations represented in texts where the language contained within these texts is used to construct meaning andrepresentation'.representation." This process happens in'the social space of society' [Schroeder]society [Denzin] and manifests itself in institutions and organizations [King], exposed using the ethnographic methods of semi-structured interviews and participant observation.OrOr, in non-academic language, the way the language in IETF/IRTF documents describes and approaches the issues they are trying to address is anindicator forindication of the underlying social assumptions andrelationsrelationships of the engineers to their engineering. By reading and analyzing these documents, as well as interviewing engineers and participating in the IETF/IRTF working groups, it is possible to distill therelationrelationship between human rights,protocolsprotocols, and the Internet's infrastructure as it pertains to the work of the IETF. The discourse analysis was operationalized using qualitative and quantitative means. The first step taken by the authors and contributors was reading RFCs and other official IETF documents. The second step was the use of apython-basedPython-based analyzer, using thetool Big Bang,"Bigbang" tool, adapted by Nick Doty[Doty][Doty], to scan for the concepts that were identified as important architectural principles (distilled on the initial reading and supplemented by the interviews and participant observation). Such a quantitative method is very precise and speeds up the research process[Richie].[Ritchie]. But this tool is unable to understand'latent meaning'"latent meaning" [Denzin]. In order to mitigate these issues of automatedword-frequency based approaches,word-frequency-based approaches and to get a sense of the'thick meaning'"thick meaning" [Geertz] of the data, a second qualitative analysis of the data set was performed. These various rounds of discourse analysis were used to inform the interviews and further data analysis. Assuchsuch, the initial rounds of quantitative discourse analysis were used to inform the second rounds of qualitative analysis. The results from the qualitative interviews were again used to feed new concepts into the quantitative discourse analysis. Assuchsuch, the two methods continued to support and enrich each other. The ethnographic methods of the data collection and processing allowed the research group to acquire the data necessary to'provide"provide a holistic understanding of research participants' views andactions'actions" [Denzin] that highlighted ongoing issues and case studies where protocols impact human rights. The interview participants were selected through purposive sampling [Babbie], as the research group was interested in getting a wide variety of opinions on the role of human rights in guiding protocol development. This sampling method also ensured that individuals with extensive experience working at the IETF in various roles were targeted. The interviewees included individuals in leadership positions (Working Group (WG) chairs, Area Directors (ADs)),'regular participants',"regular participants", and individuals working for specific entities (corporate, civil society, political, academic) and represented various backgrounds,nationalitiesnationalities, and genders. 5.1. Data Sources In order to map the potentialrelationrelationship between human rights and protocols, the HRPCresearch groupResearch Group gathered data from three specific sources: 5.1.1. DiscourseanalysisAnalysis of RFCs To start addressing the issue, a mapping exercise analyzing Internet infrastructure andprotocols features,protocol features vis-a-vis their possible impact on human rights was undertaken. Therefore, research on (1) the language used in current and historic RFCs andmailing list(2) information gathered from mailing-list discussions was undertaken to expose core architectural principles,languagelanguage, and deliberations on the human rights of those affected by the network. 5.1.2. Interviews withmembersMembers of the IETFcommunityCommunity Over 30 interviews with the current and past members of the Internet Architecture Board (IAB), current and past members of the Internet Engineering Steering Group(IESG) and(IESG), chairs of selected workinggroupsgroups, and RFC authors were done at theIETF92 DallasIETF 92 meeting in Dallas in March2015. To2015 to get aninsiderinsider's understanding of how they view the relationship (if any) between human rights andprotocols to playprotocols, and how this relationship plays out in their work. Several of the participants opted to remainanonymous, ifanonymous. If you are interested in this datasetset, please contact theauthors.authors of this document. 5.1.3. ParticipantobservationObservation in Working Groups By participating in various working groups, in person at IETFmeetingsmeetings, and onmailinglists,mailing lists, informationwas gatheredabout theIETFsIETF's day-to-dayworkings. Fromworkings was gathered, from which general themes, technical concepts, anduse-casesuse cases about human rights and protocols were extracted. This process started at theIETF91IETF 91 meeting in Honolulu and continues today. 5.2. Dataanalysis strategiesAnalysis Strategies The data above was processed using three consecutive strategies: mapping protocols related to human rights, extracting concepts from these protocols, and creation of a common glossary (detailed under Section 2). Before going over thesestrategiesstrategies, some elaboration on the process of identifying technical concepts as they relate to human rightsneeds to be given:is needed: 5.2.1. IdentifyingqualitiesQualities oftechnical concepts that relateTechnical Concepts That Relate tohuman rightsHuman Rights 5.2.1.1. MappingprotocolsProtocols andstandardsStandards tohuman rightsHuman Rights By combining data from the three data sources named above, an extensive list of protocols and standards that potentially enable the Internet as a tool for freedom of expression and association was created. In order to determine the enabling (or inhibiting)featuresfeatures, we relied on direct referencesof such impactin theRFCs,RFCs as related to such impacts, as well as input from the community.On the basis ofBased on thisanalysisanalysis, a list of RFCs that describe standards and protocols that are potentially closely related to human rights was compiled. 5.2.1.2. ExtractingconceptsConcepts fromselectedSelected RFCsIdentifyingThe first step was to identify the protocols and standards that are related to human rights and to createa human rights enabelingan environmentwas the first step. Forthat enables human rights. For that, we needed to focus on specific technical concepts that underlie these protocols and standards.On the basis ofBased on thislistlist, a number of technical concepts that appeared frequentlywas extracted,were extracted and used to create a second list of technical terms that, when combined and applied in different circumstances, create an enabling environment forexcercisingexercising human rights on the Internet. 5.2.1.3. Building acommon vocabularyCommon Vocabulary oftechnical concepts that impact human rightsTechnical Concepts That Impact Human Rights While interviewing experts, investigatingRFCsRFCs, and compiling technicaldefinitionsdefinitions, several concepts of convergence and divergence were identified. To ensure that the discussion was based on a common understanding of terms and vocabulary, a list of definitions was created. The definitions are based on the wording found in various IETFdocuments, anddocuments; ifthesethe definitions wereunavailablenot available therein, definitions were taken fromdefinitions fromotherStandards Developing OrganizationsSDOs or academic literature, as indicated inthe vocabulary section.Section 2. 5.2.1.4. Translating Human Rights Concepts into Technical Definitions The previous steps allowed for the clarification ofrelationsrelationships between human rights and technical concepts. The steps taken show how the research processzoomed in,"zoomed in", from compiling a broadlistslist of protocols and standards that relate to human rights to extracting the precise technical concepts that make up these protocols and standards, in order to understand the relationship between the two. Thissub- sectionsubsection presents the next step: translating human rights to technical concepts by matching theindividualsindividual components of the rights to the accompanying technical concepts, allowing for the creation of a list of technical conceptsthatthat, when partiallycombinedcombined, can create an enabling environment for human rights. 5.2.1.5. Listtechnical terms that when partially combined can createof Technical Terms That, When Partially Combined, Can Create anenabling environmentEnabling Environment forhuman rights On the basis ofHuman Rights Based on the priorstepssteps, the following list of technicalterms, that whenterms was drafted. When partiallycombinedcombined, this list can create an enabling environment for human rights, suchaas freedom of expression and freedom ofassociation, was drafted.association. Architectural principles Enabling features and system properties for user rights /------------------------------------------------\ | | +=================|=============================+ | = | = | = |End to endEnd-to-end = | = | Reliability = | = | Resilience = Access as | = | Interoperability =Human Righthuman right | = Good enough | Transparency = | = principle | Data minimization = | = | Permissionless innovation = | = Simplicity | Graceful degradation = | = | Connectivity = | = | Heterogeneity support = | = | = | = | = | = \------------------------------------------------/ = = +===============================================+figure 1 - relationFigure 1: Relationship betweenarchitectural principlesArchitectural Principles andenabling featuresEnabling Features foruser rights.User Rights 5.2.2. Relatinghuman rightsHuman Rights totechnical conceptsTechnical Concepts Thecombination of thetechnical conceptsthat have been gatheredlisted in the steps above have been grouped according to their impact on specificrightsrights, asthey have beenmentioned in the interviews done atIETF92IETF 92 as well as the study of literature (seeliteratureSection 4 ("Literature anddiscussion reviewDiscussion Review") above). This analysis aims to assist protocol developers in better understanding the roles that specific technical concepts have withregardsregard to their contribution to anenabelingenabling environment for people toexciseexercise their human rights. This analysis does not claim to be a complete or exhaustive mapping of all possible ways in whichaprotocols could potentially impact human rights, but it presentsan initial concepta mapping of initial concepts based on interviews andliterature andon discussionreview.and review of the literature. +-----------------------+-----------------------------------------+ | Technical Concepts | Rightspotentially impactedPotentially Impacted | +-----------------------+-----------------------------------------+ | Connectivity | | | Privacy | | | Security | | | Content agnosticism | Right to freedom of expression | | Internationalization | | | Censorship resistance | | | OpenStandardsstandards | | | Heterogeneity support | | +-----------------------+-----------------------------------------+ | Anonymity | | | Privacy | | | Pseudonymity | Right to non-discrimination | | Accessibility | | +-----------------------+-----------------------------------------+ | Content agnosticism | | | Security | Right to equal protection | +-----------------------+-----------------------------------------+ | Accessibility | | | Internationalization | Right to political participation | | Censorship resistance | | | Connectivity | | +-----------------------+-----------------------------------------+ | Open standards | | | Localization | Right to participate in cultural life, | | Internationalization |artsarts, and science, andscience &| | Censorship resistance | Right to education | | Accessibility | | +-----------------------+-----------------------------------------+ | Connectivity | | | Decentralization | | | Censorship resistance | Right to freedom of assembly | | Pseudonymity | and association | | Anonymity | | | Security | | +-----------------------+-----------------------------------------+ | Reliability | | | Confidentiality | | | Integrity | Right to security | | Authenticity | | | Anonymity | | | | | +-----------------------+-----------------------------------------+figure 2 - relationFigure 2: Relationship betweenspecific technical conceptsSpecific Technical Concepts withregardsRegard totheir contributionTheir Contribution to anenabeling environmentEnabling Environment forpeoplePeople toexercise their human rightsExercise Their Human Rights 5.2.3.Map casesMapping Cases ofprotocols, implementationsProtocols, Implementations, andnetworking paradigms that adversely impact human rightsNetworking Paradigms That Adversely Impact Human Rights orare enablers thereofAre Enablers Thereof Given the information above, the following list of cases of protocols,implenentationsimplementations, and networking paradigms that either adversely impact or enable human rights was formed. It is important to note that the assessment here is not a general judgment on these protocols, nor is it an exhaustive listing of all the potential negative or positive impacts on human rightstheythat these protocols might have. Whentheythese protocols were conceived, there were many criteria to take into account. For instance, relying onana centralized service can be bad for freedom of speech (it creates one more control point, where censorship could beapplied)applied), but it may be a necessity if the endpoints are not connected and reachable permanently. So, when we say "protocol X has feature Y, which may endangerthefreedom ofspeech",speech," it does not mean that protocol X isbad and evenbad, much less that its authors were evil. The goal here is to show, with actual examples, that the design of protocolshavehas practical consequences for some human rights and that these consequences have to be considered in the design phase. 5.2.3.1. IPv4 The Internet Protocol version 4 (IPv4), also known as'layer 3'"Layer 3" of theInternet,Internet and specifiedaswith a common encapsulation and protocol header, is defined in[RFC0791].[RFC791]. The evolution of Internet communications led to continued development in this area,encapsulated"encapsulated" in the development of version 6 (IPv6) of the protocolin [RFC2460].[RFC8200]. In spite of this updated protocol, we find that2523 years after the specification ofversion 6 of the protocol,IPv6 the olderv4IPv4 standard continues to account for asizeablesizable majority of Internettraffic, and mosttraffic. Most of the issues discussed here(with the big exception of NAT, see(Network AddressTranslation)Translators (NATs) are a major exception; see Section 5.2.3.1.2 ("Address Translation and Mobility")) are valid for IPv4 as well as IPv6. The Internet was designed as a platform for free and open communication, most notably encoded in the end-to-end principle, and that philosophy is also present in the technical implementation ofthe Internet Protocol. [RFC3724]IP [RFC3724]. While the protocol was designed to exist in an environment where intelligence is at the end hosts, it has proven to provide sufficient information that a more intelligent network core can make policy decisions and enforce policy-based trafficshaping andshaping, thereby restricting the communications of end hosts. These capabilities for network control and for limitationsof theon freedom of expression by end hosts can be traced back to theIPv4 design,design of IPv4, helping us to understand which technical protocol decisions have led to harmofto this humanrights.right. A feature that can harm freedom of expression as well as the right to privacy through misuse ofthe Internet ProtocolIP is the exploitation of the public visibility of the host pairs for allcommunications,communications and the corresponding ability todiscriminatedifferentiate and block traffic as a result of that metadata. 5.2.3.1.1. NetworkvisibilityVisibility of Source and Destination The IPv4 protocol header contains fixed location fields for both the source IP address and destination IPaddresses [RFC0791].address [RFC791]. These addresses identify both the host sending and the host receiving eachmessage, andmessage; they also allow the core network to understand who is talking towhom,whom and to practically limit communication selectively between pairs of hosts. Blocking of communication based on the pair of source and destination is one of the most common limitations on the ability for people to communicatetoday, [caida]today [CAIDA] and can be seen as a restriction of the ability for people to assemble or to consensually express themselves. Inclusion of an Internet-wide identified source in the IP header is not the only possible design, especially since the protocol is most commonly implemented over Ethernet networks exposing only link-local identifiers[RFC0894].[RFC894]. A variety of alternative designs do exist, such as the Accountable and Private Internet Protocol [APIP] andHornet [Hornet]High-speed Onion Routing at the Network Layer (HORNET) [HORNET] as well as source routing. The latter would allowforthe sender to choose apre-definedpredefined (safe) route and spoofing of the source IP address, which are technically supported bythe IPv4 protocol,IPv4, but neither are considered good practice on the Internet [Farrow]. While projects like[torproject][TorProject] provide an alternative implementation of anonymity in connections, they have been developed in spite of the IPv4 protocol design. 5.2.3.1.2. Address Translation and Mobility A major structural shift in the Internetwhichthat undermined the protocol design of IPv4, and significantly reduced the freedom of end users to communicate andassemble isassemble, was the introduction of network addresstranslation. [RFC3022]translation [RFC3022]. Network address translation is a process whereby organizations and autonomous systems connect two networks by translating the IPv4 source and destination addresses betweenthe two.them. This process puts the router performing the translationintoin a privileged position, where itcan decideis predetermined which subset of communicationsare worthy of translation, and whether an unknown request for communicationwill becorrectly forwarded to a host on the other network.translated. This process of translation has widespread adoption despite promoting a process that goes against the stated end-to-end process of the underlying protocol[natusage].[NATusage]. In contrast, the proposed mechanism to provide support for mobility and forwarding to clientswhichthat maymove,move -- encoded instead as an option intheIPprotocol in [RFC5944],[RFC5944] -- has failed to gain traction. In thissituationsituation, the compromise made in the design of the protocol resulted in a technology that is not coherent with the end-to-end principles and thus creates an extra possible hurdle for freedom of expression in its design, even though a viable alternative exists. There is a particular problem surrounding NATs andVPNVirtual Private Networks (VPNs) (as well as other connections used for privacypurposes)purposes), as NATs sometimes cause VPNs not to work. 5.2.3.2. DNS The Domain Name System (DNS)[RFC1035],[RFC1035] provides service discoverycapabilities,capabilities and provides a mechanism to associatehuman readablehuman-readable names with services. The DNSsystemis organized around a set of independently operated'Root Servers'"root servers" run by organizationswhichthat function in line with ICANN's policy by answering queries for which organizations have been delegated to manage registration under eachTop LevelTop-Level Domain (TLD). The DNS is organized as a rooted tree, and this brings up political and social concerns over control.Top Level domainsTLDs are maintained and determined by ICANN. These namespaces encompass several classes of services. The initialname spacesnamespaces, including'.Com'".com" and'.Net',".net", provide common spaces for expression of ideas, though their policies are enacted throughUS basedUS-based companies. Othername spacesnamespaces are delegated to specificnationalities,nationalities and may impose limits designed to focus speech in thoseforums bothforums, to both (1) promote speech from thatnationality,nationality andto(2) comply with local limits on expression and social norms. Finally, the system has recently been expanded with additional generic and sponsoredname spaces,namespaces -- forinstance '.travel'instance, ".travel" and'.ninja', which".ninja" -- that are operated by a range of organizationswhichthat may independently determine their registration policies. This new development has both positive and negative implications in terms of enabling human rights. Some individuals argue that it undermines the right to freedom of expression because some of these newgtldsgeneric TLDs have restricted policies on registration and particular rules on hate speech content. Others argue that precisely these properties are positive because they enable certain (mostly minority) communities to build safer spaces for association, thereby enabling their right to freedom of association. Anoften mentionedoften-mentioned example is an application like .gay [CoE]. As discussed in [RFC7626], DNS has significant privacyissues per [RFC7626].issues. Most notable is the lack of encryption to limit the visibility of requests for domain resolution from intermediary parties, and a limited deployment of DNSSEC to provide authentication, allowing the client to know that they received a correct,"authoritative","authoritative" answer to a query. In response to the privacy issues, the IETF DNSPRIVatePrivate Exchange (DPRIVE) Working Group is developing mechanisms to provide confidentiality to DNS transactions, to address concerns surrounding pervasive monitoring [RFC7258]. Authentication through DNSSEC creates a validation path for records. This authentication protects against forged or manipulated DNS data. Assuchsuch, DNSSEC protectsthedirectorylook-uplookups and makeshijacking ofit harder to hijack asession harder.session. This is important becausecurrentlyinterference with the operation of the DNS is currently becoming one of the central mechanisms used to block access to websites. This interference limits both the freedom of expression of the publisher to offer theircontent,content and the freedom of assembly for clients to congregate in a shared virtual space. Even though DNSSEC doesn't prevent censorship, it makes it clear that the returned information is not the information that wasrequested, whichrequested; this contributes to the right to security and increases trust in the network. Itis howeveris, however, important to note that DNSSEC is currently not widely supported or deployed by domain name registrars, making it difficult to authenticate and use correctly. 5.2.3.2.1. Removal ofrecordsRecords There have been a number of cases where the records for a domain are removed from the name system due to political events. Examples of this removalincludesinclude the'seizure'"seizure" of wikileaks[bbc-wikileaks][BBC-wikileaks] and the names of illegally operating gambling operations by the United StatesImmigrationsImmigration and Customs Enforcementunit (ICE).(ICE) unit. In the first case, a US court ordered the registrar to take down the domain. In the second, ICE compelled the US-based registry in charge of the .com TLD to hand ownership of those domains over to the US government. The same technique has been used in Libya to remove sites in violation of "our Country's Law and Morality (which) do not allow any kind of pornography or its promotion." [techyum] At a protocol level, there is no technical auditing for name ownership, as in alternate systems like[namecoin].Namecoin [Namecoin]. As a result, there is no ability for users to differentiate seizure from the legitimate transfer of name ownership, which is purely a policy decisionofmade by registrars. While DNSSEC addresses the network distortion events described below, it does not tackle this problem.(While mentioning(Although we mention alternative techniques, this is not a comparison of DNS with Namecoin: the latter has its own problems and limitations. The idea here is to show that there are several possible choices, and they have consequences for human rights.) 5.2.3.2.2. Distortion ofrecordsRecords The most common mechanism by which the DNSsystemis abused to limit freedom of expression is through manipulation of protocol messages by the network. One form occurs at an organizational level, where client computers are instructed to use a local DNS resolver controlled by the organization. The DNS resolver will then selectively distort responses rather than request the authoritative lookup from the upstream system. The second form occurs through the use ofdeep packet inspection,Deep Packet Inspection (DPI), where all DNS protocol messages are inspected by thenetwork,network and objectionable content is distorted, as can be observed in Chinesenetwork.networks. A notable instance of distortion occurred in Greece[ververis],[Ververis], where a study found evidence of bothof deep packet inspection(1) DPI to distort DNSreplies,replies and (2) more excessive blocking of content than was legally required or requested (also known asoverblocking). ISPs"overblocking"). Internet Service Providers (ISPs), obeying a governmental order, prevented clients from resolving the names ofdomains which they were instructed to do through a governmental order,domains, thereby prompting this particular blocking of systems there. At a protocol level, the effectiveness of these attacks is made possible by a lack of authentication in the DNS protocol. DNSSEC provides the ability to determine the authenticity of responses when used, but it is not regularly checked by resolvers. DNSSEC is not effective when the local resolver for a network is complicit in thedistortion,distortion -- forinstanceinstance, when the resolver assigned for use by an ISP is the source of injection. Selective distortion of records is alsobeenmade possible by the predictable structure of DNS messages, whichmakemakes it computationally easy for a network device to watch all passing messages even at high speeds, and the lack of encryption, which allows the network to distort only an objectionable subset of protocol messages. Specific distortion mechanisms are discussed further in[hall].[Hall]. Users can switch to anotherresolver,resolver -- forinstanceinstance, a publicone.resolver. The distorter can then try to block or hijack the connection to this resolver. This may start anarm'sarms race, with the user switching to secured connections to this alternative resolver([RFC7858]),[RFC7858] and thedisruptordistorter then trying to find more sophisticated ways to block orhijack.hijack the connection. In some cases, this search for an alternative,non- disrupting resolver,non-disrupting resolver may lead to morecentralisation,centralization because many peoplegoingare switching to a few big commercial public resolvers. 5.2.3.2.3. Injection ofrecordsRecords Responding incorrectly to requests for name lookups is the most common mechanism that in-network devices use to limit the ability of end users to discover services. Adeviation, whichdeviation that accomplishes a similar objective and may be seen as different from afreedom"freedom ofexpression perspective,expression" perspective is the injection of incorrect responses to queries. The most prominent example of this behavior occurs in China, where requests for lookups of sites deemed inappropriate will trigger the network torespond withreturn a false response, causing the client to ignore the real response when it subsequentlyarrives. [greatfirewall]arrives [greatfirewall]. Unlike the otherforms of discussion mentionednetwork paradigms discussed above, injection does not stifle the ability of a server to announceit's name,its name; it instead provides another voicewhichthat answers sooner. This is effective because without DNSSEC, the protocol will respond to whichever answer is received first, without listening for subsequent answers. 5.2.3.3. HTTP The Hypertext Transfer Protocol(HTTP), described in its(HTTP) version 1.1in RFC 7230 to 7237,[RFC7230] [RFC7231] [RFC7232] [RFC7233] [RFC7234] [RFC7235] [RFC7236] [RFC7237] is a request-response application protocol developed throughout the1990s, and1990s. HTTP factually contributed to the exponential growth of the Internet and theinter-connectioninterconnection of populations around the world. Its simple design strongly contributed to the fact that HTTP has become the foundation of most modern Internet platforms and communication systems, fromwebsites,websites to chatsystems,systems andcomputer-to-computercomputer-to- computer applications. In its manifestationwithin the World Wide Web, HTTP radically revolutionized the course of technological development and the ways people interact with online content and with each other. However, HTTP is also a fundamentally insecureprotocol,protocol that doesn't natively provide encryption properties. While the definition of the Secure Sockets Layer (SSL) [RFC6101], and later of Transport Layer Security(TLS)[RFC5246],(TLS) [RFC5246], also happened during the 1990s, the fact that HTTP doesn't mandate the use of such encryption layerstoby developers and serviceproviders,providers was one of the reasons for a very late adoption of encryption. Only in the middle of the 2000s did we observe bigInternet service providers,ISPs, such as Google, starting to provide encrypted access to their web services. The lack of sensitivity and understanding of the critical importance of securing web traffic incentivized certain (offensive) actors to develop,deploydeploy, and utilizeat largeinterception systems at large and to later launch active injection attacks, in order to swipe large amounts ofdata,data and compromise Internet-enabled devices. The commercial availability of systems and tools to perform these types of attacks also led to a number of human rights abuses that have been discovered and reported over the years.GenerallyGenerally, we can identifyin Traffic Interceptiontraffic interception (Section 5.2.3.3.1) andTraffic Manipulationtraffic manipulation (Section 5.2.3.3.2) as the two most problematic attacks that can be performed against applications employing aclear-textcleartext HTTP transport layer. That being said, the IETF is taking steady steps to move to the encrypted version of HTTP,HTTPSecureHTTP Secure (HTTPS). While this is commendable, we must not lose track of the fact that different protocols, implementations,configurationsconfigurations, and networking paradigms can intersect such that they (can be used to) adversely impact human rights. For instance, to facilitate surveillance, certain countries will throttle HTTPSconnectionsconnections, forcing users to switch tothe(unthrottled) HTTPto facilitate surveillance [Aryanetall].[Aryan-etal]. 5.2.3.3.1. Traffic Interception While we are seeing an increasing trend in the last couple of years to employ SSL/TLS as a secure traffic layer for HTTP-based applications, we are still far from seeingana ubiquitous use of encryption on the World Wide Web. It is important to consider that the adoption of SSL/TLS is also a relatively recentphenomena. E-mailphenomenon. Email providers such as riseup.net were the firstonesto enable SSL by default. Googleintroduceddid not introduce an option for itsGMailGmail users to navigate with SSLonly inuntil 2008[Rideout],[Rideout] and turned TLS on by defaultlaterlater, in 2010 [Schillace]. It took an increasing amount of security breaches and revelations on global surveillance from Edward Snowdento havebefore other mail service providersto followfollowed suit. For example, Yahooenableddid not enable SSL/TLS by default on its webmail servicesonly towards the end of 2013until early 2014 [Peterson]. TLS itself has been subject to many attacks andbugs whichbugs; this situation can be attributed to some fundamental designweaknessesweaknesses, such as lack of a statemachine, whichmachine (which opens a vulnerability fora Triple Handshake Attack,triple handshake attacks) and flaws caused by earlyU.S.US government restrictions on cryptography, leading to cipher-suite downgrade attacks (Logjamattack).attacks). These vulnerabilities are being corrected inTLS1.3.TLS 1.3 [Bhargavan][Adrian][Adrian]. HTTP upgrading to HTTPS is also vulnerable to having an attacker remove the"S""s" in any links to HTTPS URIs from aweb-pageweb page transferred in cleartext overHTTP,HTTP -- an attack called "SSL Stripping" [sslstrip]. Thus, forhigh securityhigh-security use ofHTTPSHTTPS, IETF standards such asHSTSHTTP Strict Transport Security (HSTS) [RFC6797], certificate pinning[RFC7469][RFC7469], and/orDANEDNS-Based Authentication of Named Entities (DANE) [RFC6698] should be used. As we learned throughtheSnowden's revelations, intelligence agencies have been intercepting and collecting unencrypted traffic at large for many years. There are documented examples of suchmass surveillancemass-surveillance programs withGCHQ's TEMPORAthe Government Communications Headquarters's (GCHQ's) Tempora [WP-Tempora] andNSA's XKEYSCOREthe National Security Agency's (NSA's) XKeyscore [Greenwald]. Through theseprograms NSA/GCHQprograms, the NSA and the GCHQ have been able to swipe large amounts ofdatadata, including email and instant messaging communicationswhichthat have been transportedby the respective providersin the clear foryears,years by providers unsuspecting of the pervasiveness and scale of governments' efforts and investmentintoin globalmass surveillancemass-surveillance capabilities. However, similar mass interception of unencrypted HTTP communications is also often employed ata nation-levelthe national level by some democraticcountriescountries, by exercising control over state-ownedInternet Service Providers (ISP)ISPs and through the use of commercially available monitoring, collection, and censorship equipment. Over the last fewyearsyears, a lot of information has come to public attention on the role and scale of a surveillance industry dedicated todevelop interception gear ofdeveloping differenttypes,types of interception gear, making use of known and unknown weaknesses in existing protocols [RFC7258]. We have several records of such equipment being sold and utilized by some regimes in order to monitor entire segments ofpopulationa population, especially at times of social and political distress, uncovering massive human rights abuses. For example, in20132013, the group Telecomix revealed that the Syrian regime was making use ofBlueCoatBlue Coat products in order to interceptclear-textcleartext traffic as well as to enforce censorship of unwanted content [RSF].SimilarlySimilarly, in20122011, it was found that the French technology firm Amesys provided theGaddafi'sGadhafi government with equipment able to intercept emails, Facebook traffic, and chat messages at acountrycountry-wide level [WSJ]. The use of such systems, especially in the context of the Arab Spring and of civil uprisings against the dictatorships, has caused serious concernsofregarding significant human rights abuses in Libya. 5.2.3.3.2. Traffic Manipulation The lack of a secure transport layer under HTTP connections not only exposestheusers to interception of the content of theircommunications,communications but is more and more commonly abused as a vehicle for actively compromising computers and mobile devices. If an HTTP session travels in the clear over the network, any node positioned at any point in the network is able to perform man-in-the-middleattacks andattacks; the node can observe, manipulate, and hijack the session and can modify the content of the communication in order to trigger unexpected behavior by the application generating the traffic. For example, in the case of abrowserbrowser, the attacker would be able to inject malicious code in order to exploit vulnerabilities in the browser or any of its plugins. Similarly, the attacker would be able to intercept, addmalware,malware to, and repackage binary software updates that are very commonly downloaded in the clear by applications such as word processors and media players. If the HTTP sessionwould bewere encrypted, the tampering of the content would not be possible, and these network injection attacks would not be successful. While traffic manipulation attacks havebeenlong been known, documented, andprototypedprototyped, especially in the context ofWiFiWi-Fi and LAN networks, in the last few years we have observed an increasing investmentintoin the production and sale of network injection equipment that is bothavailablecommerciallyas well asavailable and deployed at scale by intelligence agencies. For example, we learned from some of the documents provided by Edward Snowden to thepress,press that the NSA has constructed a global network injection infrastructure, calledQUANTUM,"QUANTUM", able to leverage mass surveillance in order to identify targets ofinterestsinterest and subsequently task man-on-the-side attacks to ultimately compromise a selected device. Among other attacks, the NSA makes use of an attack calledQUANTUMINSERT [Haagsma]"QUANTUMINSERT" [Haagsma], which intercepts and hijacks an unencrypted HTTP communication and forces the requesting browser to redirect to a host controlled by the NSA instead of the intended website. Normally, the new destination would be an exploitation service, referred to in Snowden documents asFOXACID,"FOXACID", which would attemptat executingto execute malicious code in the context of the target's browser. The Guardian reported in 2013 that the NSAhashas, forexampleexample, been using these techniques to target users of the popular anonymity service Tor [Schneier]. The GermanNDRNorddeutscher Rundfunk (NDR) reported in 2014 that the NSA has also been using itsmass surveillancemass-surveillance capabilities to identify Tor users at large [Appelbaum].RecentlyRecently, similar capabilitiesofused by Chinese authorities have been reported as well in what has been informally called the "Great Cannon" [Marcak], which raised numerous concerns on the potential curb on human rights and freedom of speech due to theincreasingincreasingly tighter control of Chinese Internet communications and access to information. Network injection attacks are also made widely available to state actors around the world through the commercialization of similar,smaller scalesmaller-scale equipment that can be easily acquired and deployed at a country-wide level. Certain companies are known to have network injection gear within their products portfolio [Marquis-Boire]. The technology devised and produced by some of them to perform network traffic manipulation attacks on HTTP communications is even the subject of a patent application in the United States [Googlepatent]. Access to offensive technologies available on the commercial lawful interception market has led to human rights abuses and illegitimate surveillance of journalists, human rights defenders, and political activists in many countries around the world [Collins]. While network injection attacks haven't been the subject of much attention, they do enable even unskilled attackers to perform silent and very resilient compromises, and unencrypted HTTP remains one of the main vehicles. There is a new version of HTTP, calledHTTP/2, which was published as [RFC7540] and"HTTP/2" [RFC7540], whichaimedaims to be largely backwards compatiblebutwhile alsoofferoffering newoptionoptions such as data compression of HTTPheaders andheaders, pipelining ofrequestrequests, and multiplexing multiple requests over a single TCP connection. In addition to decreasing latency to improvepage loading speedspage-loading speeds, it also facilitates more efficient use of connectivity inlow-bandwithlow-bandwidth environments, whichis an enabler forin turn enables freedom ofexpression,expression; the right toassembly,assembly; the right to politicalparticipationparticipation; and the right to participate in cultural life,artarts, and science. [RFC7540] does not mandateTransport Layer SecurityTLS or any other form of encryption,alsonor doesnotit support opportunisticencryption, eventhough thatencryption even though opportunistic encryption is now addressed in [RFC8164]. 5.2.3.4. XMPP The Extensible Messaging and Presence Protocol (XMPP), specified in [RFC6120], provides a standard for interactive chatmessaging,messaging and has evolved to encompass interoperable text, voice, and video chat. The protocol is structured as a federated network of servers, similar to email, where users register with a local serverwhichthat actsoneon their behalf to cache and relay messages. This protocol design has many advantages, allowing servers to shield clients from denial of service and other forms of retribution for theirexpression, andexpression; it is also designed to avoid central entitieswhichthat could control the ability to communicate or assemble using the protocol.None-the-less,Nonetheless, there are plenty of aspects of the protocol design of XMPPwhichthat shape the ability for users to communicatefreely,freely and toassembly throughassemble via the protocol. 5.2.3.4.1. User Identification The XMPP specification [RFC6120] dictates that clients are identified with a resource(node@domain/home [1](<node@domain/home> /node@domain/work [2])<node@domain/work>) to distinguish the conversations to specific devices. While the protocol does not specify that the resource must be exposed by the client's server to remote users, in practice this has become the default behavior. In doing so, users can be tracked by remote friends and their servers, who are able to monitor the presence of not justoftheuser,user but of each individual device the user logs in with. This has proven to be misleading to many users[pidgin],[Pidgin], since many clients only exposeuser leveluser-level rather thandevice leveldevice-level presence. Likewise, user invisibility so that communication can occur while users don't notify all buddies and other servers of their availability is not part of the formalprotocol,protocol and has only been added as an extension within the XML stream rather than enforced by the protocol. 5.2.3.4.2. Surveillance of CommunicationTheXMPPprotocolspecifies the standard by whichcommunication ofcommunications channels may be encrypted, but it does not provide visibility to clientsofregarding whether their communications are encrypted on each link. In particular, even when both clients ensure that they have an encrypted connection to their XMPP server to ensure that their local network is unable to read or disrupt the messages they send, the protocol does not provide visibility into the encryption status between the two servers. As such, clients may be subject to selective disruption of communications by an intermediate networkwhichthat disrupts communications based on keywords found throughDeep Packet Inspection.DPI. While many operators havecommitedcommitted to only establishing encrypted links from their servers in recognition of this vulnerability, it remains impossible for users to audit thisbehaviorbehavior, and encrypted connections are not required by the protocol itself[xmppmanifesto].[XMPP-Manifesto]. In particular,sectionSection 13.14 of theprotocolXMPP specification [RFC6120] explicitly acknowledges the existence of a downgrade attack where an adversary controlling an intermediate network can force theinter domaininter-domain federation between servers to revert to a non-encrypted protocolwerewhere selective messages can then be disrupted. 5.2.3.4.3. Group Chat Limitations Group chat intheXMPPprotocolis defined as an extension within the XML specification oftheXMPPprotocol (https://xmpp.org/extensions/ xep-0045.html).(https://xmpp.org/extensions/xep-0045.html). However, it is not encoded or required at a protocollevel,level and is not uniformly implemented by clients. The design of multi-user chat intheXMPPprotocolsuffers from extending a protocol that was not designed with assembly of many users in mind. In particular, in the federated protocol provided by XMPP, multi-user communities are implemented with a distinguished'owner',"owner" who is granted control over the participants and structure of the conversation. Multi-user chat rooms are identified by a name specified on a specific server, so that while the overall protocol may be federated, the ability for users to assemble in a given community is moderated by a single server. That server may block the room and prevent assembly unilaterally, even between twousersusers, neither of whom trust or use that server directly. 5.2.3.5.Peer to PeerPeer-to-Peer Peer-to-Peer (P2P) is a distributed network architecture [RFC5694] in which all the participant nodes can be responsible for the storage and dissemination of information from any other node(defined in(see [RFC7574], an IETF standard thatuseddiscusses a P2Parchitecture).architecture called the "Peer-to-Peer Streaming Peer Protocol" (PPSPP)). A P2P network is a logical overlay that lives on top of the physicalnetwork,network and allows nodes (or "peers") participatingtoin it to establish contact and exchange information directlyfrom one towith each other. The implementation of a P2P network mayveryvary widely: it may be structured or unstructured, and it may implement stronger or weaker cryptographic and anonymity properties. While its most common application has traditionally been file-sharing (and other types of content delivery systems), P2P is a popular architecture for networks and applications that require (or encourage) decentralization.A prime example is Bitcoin (and similar cryptocurrencies), as well asPrime examples include Bitcoin and other proprietary multimedia applications. In a time of heavily centralized online services,peer-to-peerP2P is regularly described as an alternative, more democratic, and resistant option that displaces structures of control over data and communications and delegates all peersequallyto be equally responsible for the functioning, integrity, and security of the data. While in principlepeer-to-peerP2P remainsimporantimportant to the design and development of future content distribution, messaging, and publishing systems, it poses numerous security and privacy challengeswhichthat are mostly delegated to individual developers to recognize, analyze, and solve in each implementation of a given P2P network. 5.2.3.5.1. Network Poisoning Since content, andin some occasionssometimes peer lists, are safeguarded and distributed byitstheir members, P2P networks are prone to what are generally defined as "poisoning attacks". Poisoning attacks might be aimed directly at the data that is being distributed, forexampleexample, (1) by intentionally corruptingit, orthe data, (2) at the index tables used to instruct the peers where to fetch the data, or (3) at routing tables, withthean attemptof providingto provide connecting peers with lists of rogue ornon- existingnonexistent peers, with the intention to effectively cause aDenialdenial ofServiceservice on the network. 5.2.3.5.2. ThrottlingPeer-to-PeerP2P traffic (and BitTorrent in particular) represents a significant percentage of global Internet traffic[Sandvine][Sandvine], and it has become increasingly popular forInternet Service ProvidersISPs to perform throttling ofcustomerscustomers' lines in order to limit bandwidth usage [torrentfreak1]and sometimesand, sometimes, probably as an effect of the ongoing conflict between copyright holders and file-sharing communities [wikileaks]. Such throttling undermines the end-to-end principle. Throttling thepeer-to-peerP2P traffic makes some uses of P2P networksineffective and itineffective; this throttling might be coupled with stricter inspection of users' Internet traffic throughDeep Packet Inspection techniques which might poseDPI techniques, possibly posing additional security and privacy risks. 5.2.3.5.3. Tracking and Identification One of the fundamental and most problematic issues with traditionalpeer-to-peerP2P networks is a complete lack of anonymization ofitstheir users. For example, in the case of BitTorrent, all peers' IP addresses are openly available to the other peers. This hasleadled toanever-increasing tracking ofpeer-to-peerP2P and file-sharing users [ars]. As the geographical location of the user is directly exposed,and soas could also be his identity, the user might become a target of additional harassment andattacks, beingattacks of a physical or legal nature. For example, it is known that in Germany law firms have made extensive use ofpeer-to-peerP2P and file-sharing tracking systems in order to identify downloaders and initiate legal actions looking for compensations [torrentfreak2]. It is worth noting that there are some varieties of P2P networks that implement cryptographic practices and that introduce anonymization ofitstheir users. Such implementations may be proved to be successful in resisting censorship ofcontent,content and tracking ofthenetwork peers. Aprimaryprime example isFreeNetFreenet [freenet1], a free software application that is (1) designed to make it significantlyincrease the difficulty ofmore difficult to identify users and contentidentification,and (2) dedicated tofosterfostering freedom of speech online [freenet2]. 5.2.3.5.4. Sybil Attacks In open-membership P2P networks, a single attacker can pretend to be many participants, typically by creating multiple fake identities of whatever kind the P2P network uses [Douceur]. Attackers can use Sybil attacks to bias choices that the P2P network makes collectivelytowardto the attacker's advantage, e.g., by making it more likely that a particular data item (or some threshold of the replicas or shares of a data item)areis assigned to attacker-controlled participants. If the P2P network implements any voting, moderation, orpeer review- likepeer-review-like functionality, Sybil attacks may be used to "stuff the ballots"towardto benefit theattacker's benefit.attacker. Companies and governments can use Sybil attacks on discussion-oriented P2P systems for "astroturfing" or creating the appearance of mass grassroots support for some position where in reality there isnone in reality.none. It is important to know that there are no known complete, environmentally sustainable, and fully distributed solutions to Sybil attacks, and routing via'friends'"friends" allows users to be de-anonymized via their social graph. It is important to note that Sybil attacks in this context(e.f.(e.g., astroturfing) are relevant to more than P2Pprotocols. Andprotocols; they are also common onweb basedweb-based systems, and they are exploited by governments and commercialentitities.entities. Encrypted P2P andAnonymousanonymous P2P networks have alreadyemerged and providedemerged. They provide viable platforms for sharing material[tribler], publish[Tribler], publishing content anonymously, andcommunicatecommunicating securely[bitmessage].[Bitmessage]. These platforms are not perfect, and more research needs to be done. If adopted at large, well-designed and resistant P2P networks might represent a critical component of a future secure and distributed Internet, enabling freedom of speech and freedom of information at scale. 5.2.3.6. Virtual PrivateNetwork The Virtual PrivateNetworks(VPN) that are beingThe VPNs discussed here are point-to-point connections thatenablesenable two computers to communicate over an encrypted tunnel. There are multiple implementations and protocols used in the deployment of VPNs, and they generally diversify by encryption protocol or particular requirements, most commonly in proprietary and enterprise solutions. VPNs areusedcommonlyeitherused to (1) enable some devices to communicate through peculiar network configurations,or in order to(2) use some privacy and security properties in order to protect the traffic generated by the enduser;user, or both. VPNs have also become a very popular technology among human rights defenders, dissidents, and journalists worldwide to avoid local monitoring and eventually also to circumvent censorship.Among human rights defendersVPNs are often debated among human rights defenders as a potential alternative to Tor or other anonymous networks. Suchcomparison iscomparisons are misleading, as some of the privacy and security properties of VPNs are often misunderstood by less tech-savvyusers, whichusers and could ultimately lead to unintended problems. As VPNs have increased in popularity, commercial VPN providers have started growingin businessas businesses and are very commonly picked by human rights defenders and people at risk, as they are normally provided with an easy-to-use serviceand sometimesand, sometimes, even custom applications to establish the VPN tunnel. Not being able to control the configuration of the network,and even less solet alone the security of the application, assessing the general privacy and security state of common VPNs is very hard.Often suchSuch services have often been discovered to be leaking information, and their custom applications have been found to be flawed. While Tor and similar networks receive a lot of scrutiny from the public and the academic community, commercial ornon- commercial VPN networksnon-commercial VPNs arewayfar less analyzed and understood [Insinuator][Alshalanetal] ,[Alshalan-etal], and it might be valuable to establish some standards to guarantee a minimal level of privacy and security to those who need them the most. 5.2.3.6.1. NoanonymityAnonymity against VPNproviderProviders One of the common misconceptions among users of VPNs is the level of anonymityVPNthat VPNs can provide. This sense of anonymity can be betrayed by a number of attacks or misconfigurations of the VPN provider. It is important to remember that, in contrast to Tor and similar systems,VPN wasVPNs were not designed to provide anonymity properties. From a technical point of view,thea VPN might leak identifiableinformation,information or might be the subject of correlation attacks that could expose the originating address ofthea connecting user. Most importantly, it is vital to understand that commercial andnon- commercialnon-commercial VPN providers are bound by the law of the jurisdiction in which they resideinor in which their infrastructure is located, and they might be legally forced to turn over data of specific users if legal investigations or intelligence requirements dictate so. In such cases, if the VPN providers retain logs, it is possible thatthea user's informationof the user iscould be provided to the user's adversary andleadslead to his or her identification. 5.2.3.6.2. LoggingWith VPN beingBecause VPNs are point-to-point connections, the service providers are in fact able to observe the original location oftheconnectingusersusers, and they are able to track at what time they started their sessionand eventuallyand, eventually, also to which destinations they're trying toconnect to.connect. If the VPN providers retain logs for a longenough,enough time, they might be forced to turn over the relevant data or they might be otherwise compromised, leading to the same data getting exposed. A clearlog retaininglog-retention policy could be enforced, butconsiderigconsidering that countries enforce different levels ofdata retentiondata-retention policies, VPN providers should at least be transparentonregarding what informationdothey store and for how long it is being kept. 5.2.3.6.3.3rd PartyThird-Party Hosting VPN providers very commonly rely on3rdthird parties to provision the infrastructure that is later going to be used to run VPN endpoints. For example, they might rely on external dedicated serverhosting providers,providers or on uplink providers. In those cases, even if the VPN provider itself isn't retaining any significant logs, the information ontheconnecting users might be retained by those3rdthird parties instead, introducing an additional collection point for the adversary. 5.2.3.6.4. IPv6 Leakage Some studies proved that several commercial VPN providers and applications sufferoffrom critical leakage of information through IPv6 due to improper support and configuration [PETS2015VPN]. This is generally caused by a lack of proper configuration of the client's IPv6 routing tables. Considering that most popular browsers and similar applications have been supporting IPv6 by default, if the host is provided with a functional IPv6 configuration, the traffic that is generated might be leaked if the VPN application isn't designed to manipulate such traffic properly. 5.2.3.6.5. DNS Leakage Similarly, VPN services that aren't handling DNS requests andare notaren't running DNS servers of theirown,own might be prone to DNS leakingwhichthat might not only expose sensitive information on the activity ofthe user,a user but could also potentially lead to DNS hijacking attacks andfollowingsubsequent compromises. 5.2.3.6.6. Traffic Correlation Someimplementations ofVPN implementations appear to be particularly vulnerable to identification and collection of key exchangeswhich,that, some Snowden documents revealed, are systematically collected and stored for future reference. The ability of an adversary to monitor network connections at many different points over theInternet,Internet can allow them to perform traffic correlation attacks and identify the origin of certain VPN traffic bycross referencingcross-referencing the connection time of the user to the endpoint and the connection time of the endpoint to the final destination. These types of attacks, although very expensive and normally only performed by very resourceful adversaries, have been documented[spiegel][SPIEGEL] to be already inpracticepractice, and they could completely nullify the use of a VPN and ultimately expose the activity and the identity of a user at risk. 5.2.3.7. HTTP Status Code 451Every"Every Internet user has run into the '404 Not Found' Hypertext Transfer Protocol (HTTP) status code when trying, and failing, to access a particularwebsitewebsite" [Cath]. It is a response status that the server sends to thebrowser,browser when the server cannot locate the URL.'403 Forbidden'"403 Forbidden" is another example of this class of code signals that gives users information about what is going on. In the'403' case"403" case, the server can bereached,reached but is blocking the request because the user is trying to access content forbidden tothem. Thisthem, typically because some content is only for identified users, based on apayment,payment or onaspecial status in theorganisation. 403 is mostorganization. Most of thetimetime, 403 is sent by the origin server, not by an intermediary. If a firewall prevents a government employeeto accessfrom accessing pornography on awork-computer,work computer, it does not use 403. As surveillance and censorship of the Internetisare becoming more commonplace, voices were raised at the IETF to introduce a new status code that indicates when something is not available for'legal reasons'"legal reasons" (like censorship): The 451 status code would allow server operators to operate with greater transparency in circumstances where issues of law or public policy affect their operation. This transparency may be beneficialbothto both (1) these operators andto end-users(2) end users [RFC7725]. The status code is named'451', a"451" in reference to both Bradbury's famous novelon censorship,"Fahrenheit 451" andtheto 451 degrees Fahrenheit (the temperature(in Fahrenheit)at whichbookpaper autoignites.some claim book paper autoignites). During theIETF92IETF 92 meeting in Dallas, there was discussion about the usefulness of'451'.451. The main tension revolved around the lack of an apparent machine-readable technical use of the information. The extent to which'451'451 is just'political theatre'"political theatre" or whether it has a concrete technical use was heatedly debated. Some argued that'the"the 451 status code is just a status code with a responsebody'body"; others said it was problematic because'it"it brings law into thepicture'. Againpicture." Still others argued that it would be useful forindividuals,individuals or for organizations like the'Chilling Effects' project,"Chilling Effects" project that are crawling thewebWeb to get an indication of censorship (IETF discussion on'451' -451 -- author's fieldnotesnotes, March 2015). There was no outright objection during the Dallas meeting against moving forward on status code'451',451, and on December 18,20152015, theInternet Engineering Steering GroupIESG approvedpublication of 'An"An HTTP Status Code to Report LegalObstacles'. ItObstacles" (now [RFC7725]) for publication. HTTP status code 451 is now anIETF approvedIETF-approved HTTP status codeto signalthat signals when resource access is denied as a consequence of legaldemands [RFC7725].demands. What is interesting about this particular case is that not only technical arguments but also the status code's outright potential political use for civil society played a substantial role in shaping thediscussion,discussion and the decision to move forward with this technology. It is nonetheless important to note that HTTP status code 451 is not a solution to detect all occasions of censorship. A large swath of Internet filtering occurs in the network, at a lower level than HTTP, rather than at the server itself. For these forms ofcensorshipcensorship, 451 plays a limited role, as typical censoring intermediaries won't generate it. Besides technical reasons, such filtering regimes are unlikely to voluntarily inject a 451 status code. The use of 451 is most likely to apply in the case of cooperative, legal versions of content removal resulting from requests to providers. One can think of content that is removed or blocked for legal reasons, like copyright infringement, gambling laws, child abuse,et cetera.etc. Large Internet companies and search engines are constantly asked to censor content in various jurisdictions. 451 allows this to be easilydiscovered,discovered -- forinstanceinstance, by initiatives like the Lumen Database. Overall, the strength of 451 lies in its ability to provide transparency by giving the reason forblocking,blocking and giving theend-end user the ability to file a complaint. It allows organizations to easily measure censorship in an automatedway,way and prompts the user to access the content via another path(e.g. TOR,(e.g., Tor, VPNs) when (s)he encounters the 451 status code. Status code 451impactimpacts human rights by making censorship more transparent and measurable.The status codeIt increases transparencybothby signaling the existence of censorship (instead of a muchmore broadbroader HTTP error messagelikesuch as HTTP status code 404) as well as providing details of the legal restriction, which legal authority is imposing it, and to what class of resources itapplies to.applies. This empowers the user to seek redress. 5.2.3.8. DDoSattacksAttacks Many individuals,not excludingincluding IETF engineers, have argued that DDoS attacks are fundamentally against freedom of expression.TechnicallyTechnically, DDoS attacks arewhenattacks where one host or multiplehosthosts overload the bandwidth or resources of another host by flooding it with traffic or makingresource intensiveresource-intensive requests, causing it to temporarily stop being available to users. One can roughly differentiate three types of DDoS attacks:Volume Based Attacked (This attack aims1. volume-based attacks (which aim to make the host unreachable by using up allit's bandwith, often usedits bandwidth; often-used techniquesare:are UDP floods and ICMPfloods), Protocol Attacks (Thisfloods) 2. protocol attacksaims(which aim to use up actual serverresources, often usedresources; often-used techniques are SYN floods, fragmented packet attacks, andPing"ping ofDeathdeath" [RFC4949])and Application Layer Attacks (this attack aims3. application-layer attacks (which aim to bring down a server, such asthe webserver).a web server) DDoS attacks can thus stifle freedom ofexpression,expression and complicate the ability of independent media and human rights organizations to exercise their right to (online) freedom of association, while facilitating the ability of governments to censor dissent. When it comes to comparing DDoS attacks to protests in offline life, it is important to remember that only a limited number of DDoS attacksinvolvedsolely involved willing participants. In the overwhelming majority of cases, the clients are hacked hosts of unrelated parties that have not consented to being part of a DDoS (forexceptionsexceptions, see OperationAbibil [Abibil]Ababil [Ababil] or the Iranian GreenMovementMovement's DDoS campaign at election time [GreenMovement]). In addition, DDoS attacks are increasingly used as an extortion tactic. All of these issues seem to suggest that the IETF should try to ensure that their protocols cannot be used for DDoSattacks, whichattacks; this is consistent with the long-standing IETF consensus that DDoS is an attack that protocols should mitigatethemto the extent they can [BCP72]. Decreasing the number of vulnerabilities in protocols and (outside of the IETF) the number of bugs in the network stacks of routers or computers could address this issue. The IETF can clearly play a role in bringing about some of thesechangeschanges, but the IETF cannot be expected to take a positive stance on (specific) DDoSattacks,attacks or to create protocolstothat enable some attacks and inhibit others. What the IETF can do is critically reflect on its role in the development of theInternet,Internet and how this impacts the ability of people toexcerciseexercise their human rights, such as freedom of expression. 6. Model fordeveloping human rights protocol considerationsDeveloping Human Rights Protocol Considerations This section outlines a set of human rights protocol considerations for protocol developers. It provides questions that engineers should ask themselves when developing or improving protocols if they want to understand their impact on humanrights impact.rights. Itshould howevershould, however, be noted that the impact of a protocol cannotsolelybe solely deduced from itsdesign, butdesign; its usage and implementation should also be studied to form a full assessment of the impact of the protocol on humanrights impact assessment.rights. The questions are based on the research performed by thehrpcHRPC Research Group. This researchgroup which has beenwas documentedbeforeprior to the writing of these considerations. The research establishes that human rights relate to standards andprotocols andprotocols; it also offers a common vocabulary of technical concepts that impact human rights and how these technicalconceptconcepts can be combined to ensure that the Internet remains an enabling environment for human rights. Withthis the contours ofthis, a model for developing human rights protocol considerations has taken shape. 6.1. Humanrights threatsRights Threats Human rights threats on the Internet come in a myriad of forms. Protocols and standards can either harm or enable the right to freedom ofexpression,expression; the right tonon-discrimination,non-discrimination; the right to equalprotection,protection; the right to participate in cultural life,artsarts, andscience,science; the right to freedom of assembly andassociation,association; and the right to security. Anend-userend user who is denied access to certain services,datadata, or websites may be unable to disclose vital information about malpractice on themalpracticespart of a government or other authority. A person whose communications are monitored may be prevented from exercising their right to freedom of association orparticipateparticipation in political processes [Penney]. In a worst-case scenario, protocols that leak information can lead to physical danger. A realistic example to consider iswhenwhen, based on information gathered by state agencies through information leakage in protocols, individuals perceived as threats to the state are subjected totorture ortorture, extrajudicialkillingkillings, ordetention on the basis of information gathered by state agencies through information leakage in protocols.detention. This section details several'common'"common" threats to human rights, indicating how each of these can lead to harm to, or violations of, humanrights violations/ harms and presentrights. It also presents several examples of how these threats to human rights materialize on the Internet. This threat modeling is inspired by [RFC6973]Privacy("Privacy Considerations for InternetProtocols,Protocols"), which is based onthesecurity threat analysis. This method is by no means a perfect solution for assessing human rights risks in Internet protocols and systems; itis howeveris, however, the best approach currently available. Certain specific human rights threats are indirectly considered in Internet protocols as part ofthetheir security considerations [BCP72], but privacy guidelines [RFC6973] or reviews, let alonehuman rights impactthe assessments of the impact of protocols on human rights, are not standardized or implemented. Many threats,enablersenablers, and risks are linked to different rights. This is notunsurprisingsurprising if one takes into account that human rights are interrelated,interdependentinterdependent, and indivisible.Here howeverHere, however, we're not discussing all humanrightsrights, because not all human rights are relevant to ICTs in general and to protocols and standards in particular[Bless]: "The[Bless1]: The main source of the values of human rights is the International Bill of Human Rights that is composed of the Universal Declaration of Human Rights [UDHR] along with the International Covenant on Civil and Political Rights [ICCPR] and the International Covenant on Economic, Social and Cultural Rights [ICESCR]. In the light of several cases of Internet censorship, the Human Rights Council Resolution 20/8 was adopted in 2012 [UNHRC2016], affirming". . ."... that the same rights that people have offline must also be protectedonline. . . " .online ..." In 2015, the Charter of Human Rights and Principles for the Internet [IRP] was developed and released. According to these documents, some examples of human rights relevant for ICT systems are human dignity (Art. 1 UDHR), non-discrimination (Art. 2), rights to life, liberty and security (Art. 3), freedom of opinion and expression (Art. 19), freedom of assembly and association (Art. 20), rights to equal protection, legal remedy, fair trial, due process, presumed innocent (Art. 7-11), appropriate social and international order (Art. 28), participation in public affairs (Art. 21), participation in cultural life, protection of intellectual property (Art. 27), and privacy (Art.12)."12). A partial catalog of human rights related to ICTs, including economic rights, can be found in [Hill2014]. This is by no means an attempt to exclude specific rights or prioritize some rights over others. If other rights seem relevant, please contact theauthors.authors of this document. 6.2. Guidelines forhuman rights considerationsHuman Rights Considerations This section provides guidance for document authors in the form of a questionnaire about protocols and their (potential) impact. The questionnaire may be useful at any point in the design process, particularly after document authors have developed a high-level protocol model as described in [RFC4101]. These guidelines do not seek to replace any existing referencedspecifications, but ratherspecifications; rather, they contribute to them and look at the design process from a human rights perspective. Protocols and InternetStandardStandards might benefit from a documented discussion of potential human rights risks arising from potential misapplications of the protocol or technology described in theRFC.RFC in question. This might be coupled with an Applicability Statement for that RFC. Note that the guidance provided in this section does not recommend specific practices. The range of protocols developed in the IETF is too broad to make recommendations about particular uses of data or how human rights might be balanced against other design goals. However, by carefully considering the answers to the following questions, document authors should be able to produce a comprehensive analysis that can serve as the basis for discussion on whether the protocol adequately takes specific human rights threats into account. This guidance is meant to help the thought process of a human rights analysis; it does not provide specific directions for how to write a human rights protocol considerations section (following the example set in [RFC6973]), and the addition of a human rights protocol considerations section has also not yet been proposed. In considering these questions, authors will need to be aware of the potential of technical advances or the passage of time to undermine protections. In general, considerations of rights are likely to be more effective if they are considered given a purpose and specific use cases, rather than as abstract absolute goals. 6.2.1. ConnectivityQuestion(s):Questions: - Does your protocol add application-specific functions to intermediary nodes? - Could this functionality be added to end nodes instead of intermediary nodes? - Is your protocol optimized for low bandwidth andhigh latencyhigh-latency connections? - Could your protocol also be developed in a stateless manner? Explanation: The end-to-end principle [Saltzer] holds that'the"the intelligence is end to end rather than hidden in thenetwork'network" [RFC1958]. The end-to-end principle is important for the robustness of the network and innovation. Such robustness of the network is crucial to enabling human rights like freedom of expression. Example: Middleboxes (which can beContent Delivery Networks, Firewalls, NATscontent delivery networks, firewalls, NATs, or other intermediary nodes that provide "services" other'services'than routing) serve many legitimate purposes. But the protocols guidingthem,them can influence individuals' ability to communicate online freely and privately. The potential forabuse andabuse, intentional and unintentionalcensoringcensoring, and limiting permissionlessinnovation,innovation -- andthus ultimatelythus, ultimately, the impact of middleboxes on the Internet as a place of unfiltered, unmonitored freedom ofspeech,speech -- is real. Impacts: - Right to freedom of expression - Right to freedom of assembly and association 6.2.2. PrivacyQuestion(s):Questions: - Did you have a look at theGuidelinesguidelines inthe PrivacySection 7 of [RFC6973] ("Privacy Considerations for InternetProtocols [RFC6973] section 7?Protocols")? - Could your protocol in any way impact the confidentiality of protocol metadata? - Could your protocol counter traffic analysis? - Could your protocol improve data minimization? - Does your document identify potentially sensitiveloggeddata logged by your protocol and/or for how long that data needs to be retained for technical reasons? Explanation:Privacy"Privacy" refers to the right of an entity (normally a person), actinginon its own behalf, to determine the degree to which it will interact with its environment, including the degree to which the entity is willing to share its personal information withothers.others [RFC4949]. If a protocol provides insufficient privacyprotectionprotection, it may have a negative impact on freedom of expression as usersself- censorself-censor for fear ofsurveillance,surveillance or find themselves unable to express themselves freely. Example: See[RFC6973][RFC6973]. Impacts: - Right to freedom of expression - Right to non-discrimination 6.2.3. Contentagnosticism Question(s):Agnosticism Questions: - If your protocol impacts packet handling, does it use user data (packet data that is not included in the header)?Is it making- Does your protocol make decisions based on the payload of the packet? - Does your protocol prioritize certain content or services over others in the routingprocess ?process? - Is the protocol transparent about the prioritization that is made (if any)? Explanation:Content agnosticism"Content agnosticism" refers to the notion that network traffic is treated identically regardless of payload, with someexception whereexceptions when it comes to effective traffichandling,handling -- forinstance where it comes to delay tolerantinstance, delay-tolerant ordelay sensitive packets,delay-sensitive packets based on the header. Example: Content agnosticism prevents payload-based discrimination against packets. This is important because changes to this principle can lead to a two-tiered Internet, where certain packets are prioritized over others based onthe basis oftheir content.EffectivelyEffectively, this would mean that although all users are entitled to receive their packets at a certain speed, some users become more equal than others. Impacts: - Right to freedom of expression - Right to non-discrimination - Right to equal protection 6.2.4. SecurityQuestion(s):Questions: - Did you have a look atGuidelines[BCP72] ("Guidelines for Writing RFC Text on SecurityConsiderations [BCP72]?Considerations")? - Have you found any"attacksattacks that are somewhat related to your protocol yet considered out of scopeoffor your document? - Would these attacks be pertinent to thehuman rights enablingfeatures of the Internet that enable human rights (as described throughout this document)? Explanation: Most people speak of security as if it were a single monolithic property of a protocol orsystem,system; however, upon reflection one realizes that it is clearly not true. Rather, security is a series of related but somewhat independent properties. Not all of these properties are required for every application. Since communications are carried out by systems and access to systems is through communications channels, these goals obviously interlock, but they can also be independently provided [BCP72]. Example: See [BCP72]. Impacts: - Right to freedom of expression - Right to freedom of assembly and association - Right to non-discrimination - Right to security 6.2.5. InternationalizationQuestion(s):Questions: - Does your protocol have text strings that have to be understood or entered by humans? - Does your protocol allow Unicode? If so, do you accept texts in one charset (which must beUTF-8),UTF-8) or several (which is dangerous for interoperability)? - If character sets or encodings other than UTF-8 are allowed, does your protocol mandateaproper tagging of the charset? - Did you have a look at [RFC6365]? Explanation:Internationalization"Internationalization" refers to the practice of making protocols, standards, and implementations usable in different languages and scripts (seeLocalization). InSection 6.2.12 ("Localization")). "In the IETF,internationalization'internationalization' means to add or improve the handling ofnon- ASCIInon-ASCII text in aprotocol. [RFC6365]protocol" [RFC6365]. A different perspective, more appropriate to protocols that are designed for global use from the beginning, is the definition used byW3C:the W3C [W3Ci18nDef]: "Internationalization is the design and development of a product, application or document content that enables easy localization for target audiences that vary in culture, region, or language."{{W3Ci18nDef}}Many protocols that handle text only handle one charset (US-ASCII), or they leave the question of whatCCScoded character set (CCS) and encoding are used up to local guesswork (which leads, of course, to interoperabilityproblems).problems) [RFC3536]. If multiple charsets are permitted, they must be explicitly identified [RFC2277]. Adding non-ASCII text to a protocol allows the protocol to handle more scripts, hopefullyrepresenting users acrossall scripts in use in the world. In today's world, that is normally best accomplished by allowing Unicode encoded in UTF-8 only. In the current IETF policy [RFC2277], internationalization is aimed at user-facing strings, not protocol elements, such as the verbs used by some text-based protocols. (Do note that somestringsstrings, such as identifiers, are both content and protocolelements, such as the identifiers.)elements.) If the Internet wants to be a global network of networks, the protocols should work withotherlanguages other than English andothercharacter sets other thanlatinLatin characters. It is therefore crucial that at least the content carried by the protocol can be in anyscript,script and that all scripts are treated equally. Example: SeelocalizationSection 6.2.12 ("Localization"). Impacts: - Right to freedom of expression - Right to political participation - Right to participate in cultural life,artsarts, and science 6.2.6. Censorshipresistance Question(s):Resistance Questions: - Does this protocol introduce new identifiers or reuse existing identifiers(e.g. MAC(e.g., Media Access Control (MAC) addresses) that might be associated with persons or content? - Does your protocol make it apparent or transparent when access to a resourceitis restricted? - Can your protocol contribute to filtering in such a way that it could be implemented to censor data or services?Could thisIf so, could your protocol be designed to ensure that this doesn't happen? Explanation:Censorship resistance"Censorship resistance" refers to the methods and measures to prevent Internet censorship. Example:In the development of theWhen IPv6protocol itwasdiscussed to embeddeveloped, embedding aMedia Access Control (MAC)MAC address into unique IPaddresses.addresses was discussed. Thiswould makemakes itpossiblepossible, per [RFC4941], for'eavesdroppers"eavesdroppers and other information collectors to identify when different addresses used in different transactions actually correspond to the samenode. [RFC4941]node." This is whyPrivacy Extensionsprivacy extensions forStateless Address Autoconfigurationstateless address autoconfiguration in IPv6 [RFC4941] have been introduced.[RFC4941]Identifiers of content exposed within a protocol might be used to facilitate censorship, as in the case ofApplication Layer basedapplication-layer-based censorship, which affects protocols like HTTP. Denial or restriction of access can be made apparent by the use of status code451 - which allows451, thereby allowing server operators to operate with greater transparency in circumstances where issues of law or public policy affect their operation [RFC7725]. Impacts: - Right to freedom of expression - Right to political participation - Right to participate in cultural life,artsarts, and science - Right to freedom of assembly and association 6.2.7. Open StandardsQuestion(s):Questions: - Is your protocol fully documented in such a way that it could be easily implemented, improved, builtuponupon, and/or further developed? - Do you depend on proprietary code for the implementation,runningrunning, or further development of your protocol? - Does your protocol favor a particular proprietary specification over technically equivalent and competingspecification(s),specification(s) -- forinstanceinstance, by making any incorporated vendor specification "required" or "recommended" [RFC2026]? - Do you normatively reference another standard that is not available without cost (and couldit possible be done without)?you possibly do without it)? - Are you aware of any patents that would prevent your standard from being fully implemented[RFC3979] [RFC6701]?[RFC6701] [RFC8179]? Explanation: The Internet was able to be developed into the global network of networks because of the existence of open, non-proprietary standards [Zittrain]. They are crucial for enabling interoperability. Yet, open standards are not explicitly defined within the IETF. On the subject, [RFC2026]states: Variousstates the following: "Various national and international standards bodies, such as ANSI, ISO, IEEE, andITU- T,ITU-T, develop a variety of protocol and service specifications that are similar to Technical Specificationsdefineddefined" at the IETF.National"National and international groups also publish"implementors' agreements"'implementors' agreements' that are analogous to Applicability Statements, capturing a body ofimplementation-specificimplementation- specific detail concerned with the practical application of their standards. All of these are considered to be"open'open externalstandards"standards' for the purposes of the Internet StandardsProcess.Process." Similarly, [RFC3935] does not define open standards but does emphasize the importance of'open process':"open process": any interested person can participate in the work, know what is being decided, and make his or her voice heard on the issue. Part of this principle is the IETF's commitment to making its documents, WG mailing lists, attendance lists, and meeting minutes publicly available on the Internet. Open standards areimportantimportant, as they allow for permissionless innovation, which in turn is importantto maintainfor maintaining the freedom and ability to freely create and deploy new protocols on top of the communications constructs that currently exist. It is at the heart of the Internet as we know it, and to maintain its fundamentally open nature, we need to be mindful of the need for developing open standards. All standards that need to be normatively implemented should be freely available andwithshould provide reasonable protectionforagainst patent infringement claims, so that it can also be implemented inopen sourceopen-source or free software. Patents have often held back open standardization or have been used against those deploying open standards, particularly in the domain of cryptography[newegg].[Newegg]. An exemptionof thisis sometimes made when a protocolis standardizedthat normatively relies onspeficiationsspecifications produced byothersother SDOs that are not freelyavailable.available is standardized. Patents in open standards or in normative references to other standards should have a patent disclosure [notewell], royalty-free licensing [patentpolicy], or some other form of reasonable protection. Reasonable patent protection shouldincludesinclude, but is not limitedtoto, cryptographic primitives. Example: [RFC6108] describes a system deployed by Comcast, an ISP, for providing critical end-user notifications to webbrowsers, which has been deployed by Comcast, an Internet Service Provider (ISP).browsers. Such a notification system is being used to providenear-immediatealmost-immediate notifications to customers, such asto warnwarning them that their traffic exhibits patterns that are indicative of malware or virus infection. There are other proprietary systems that can perform such notifications, but those systems utilize Deep Packet Inspection (DPI) technology. In contrast to DPI,this document[RFC6108] describes a system that does not rely uponDPI,DPI and is instead basedinon open IETF standards andopen sourceopen-source applications. Impacts: - Right to freedom of expression - Right to participate in cultural life,artsarts, and science 6.2.8. Heterogeneity SupportQuestion(s):Questions: - Does your protocol support heterogeneity by design? - Does your protocol allow for multiple types of hardware? - Does your protocol allow for multiple types of application protocols? - Is your protocol liberal in what it receives and handles? - Willityour protocol remain usable and open if the context changes? - Does your protocol allowthere to bewell-defined extension points?DoIf so, do these extension points allow for open innovation? Explanation:The[FIArch] notes the following: "The Internet is characterized by heterogeneity on many levels: devices and nodes, router scheduling algorithms and queue management mechanisms, routing protocols, levels of multiplexing, protocol versions and implementations, underlying link layers (e.g., point-to-point, multi-access links, wireless, FDDI, etc.), in the traffic mix and in the levels of congestion at different times and places. Moreover, as the Internet is composed of autonomous organizations andInternetinternet service providers, each with their own separate policy concerns, there is a large heterogeneity of administrative domains and pricingstructures.structures." As a result, as also noted in [FIArch], the heterogeneity principle proposed in [RFC1958] needs to be supported bydesign [FIArch].design. Example: Heterogeneity is inevitable and needs to be supported by design.MultipleFor example, multiple types of hardware must be allowedfor, e.g.for transmission speeds differing by at least7seven orders of magnitude, various computer word lengths, and hosts ranging from memory-starved microprocessors up to massively parallel supercomputers.MultipleAs noted in [RFC1958], "Multiple types of application protocol must be allowed for, ranging from the simplest such as remote login up to the most complex such as distributeddatabases [RFC1958].databases." Impacts: - Right to freedom of expression - Right to politicalparticiptationparticipation 6.2.9. AnonymityQuestion(s):Question: - Did you have a look atthe Privacy[RFC6973] ("Privacy Considerations for InternetProtocols [RFC6973],Protocols"), especiallysectionSection 6.1.1?of that document? Explanation:Anonymity"Anonymity" refers to the condition of an identity being unknown or concealed [RFC4949]. Even though full anonymity is hard to achieve, it is a non-binary concept. Making pervasive monitoring and tracking harder is important for many users as well as for the IETF [RFC7258]. Achieving a higher level of anonymity is an important feature for manyend-users,end users, as it allows them different degrees of privacy online. Example:Often protocolsProtocols often expose personaldata,data; it is therefore important to consider ways to mitigate the obviousprivacy impacts.impacts on privacy. A protocol that uses data that could help identify a sender (items of interest) should be protected from third parties. Forinstanceinstance, if one wants to hide the source/destination IP addresses of a packet, the use of IPsec in tunneling mode (e.g., inside avirtual private network)VPN) canbe helpful tohelp protectfromagainst third parties likely to eavesdrop packets exchanged between the tunnel endpoints. Impacts: - Right to non-discrimination - Right to political participation - Right to freedom of assembly and association - Right to security 6.2.10. PseudonymityQuestion(s):Questions: - Have you consideredthe Privacy[RFC6973] ("Privacy Considerations for InternetProtocols [RFC6973],Protocols"), especiallysectionSection 6.1.2?of that document? - Does the protocol collect personally derived data? - Does the protocol generate or process anything that can be, or that can be tightly correlated with, personally identifiable information? - Does the protocol utilize data that ispersonally-derived, i.e.personally derived, i.e., derived from the interaction of a singleperson,person or from their device or address? - Does this protocol generate personally deriveddata, and if sodata? If so, how will that data be handled? Explanation: Pseudonymity--- the ability to use a persistent identifier that is not immediately linked to one's offlineidentity" straight away -identity -- is an important feature for manyend-users,end users, as it allows them different degrees of disguised identity and privacy online. Example:DesigningWhen designing a standard that exposes personal data, it is important to consider ways to mitigate the obvious impacts. While pseudonyms cannot easily besimply reverse engineered -reverse-engineered -- for example, some early approachessimply took approachesused such techniques as simple hashing of IPaddreses, theseaddresses that couldthenin turn besimplyeasily reversed by generating a hash for each potential IP address and comparing it to the pseudonym--- limiting the exposure of personal data remains important.Pseudonymity"Pseudonymity" means using a pseudonym instead of one's "real" name. There are many reasons for users to usepseudoyms,pseudonyms -- forinstance to:instance, to hide theirgender,gender; protect themselves againstharassment,harassment; protect their families'privacy,privacy; frankly discusssexuality,sexuality; or developaan artistic or journalistic persona without retribution from an employer, (potential) customers, or socialsurrounding. [geekfeminism]surroundings [geekfeminism]. The difference between anonymity and pseudonymity is that a pseudonymoftenis often persistent. "Pseudonymity is strengthened when less personal data can be linked to the pseudonym; when the same pseudonym is used less often and across fewer contexts; and when independently chosen pseudonyms are more frequently used for new actions (making them, from an observer's or attacker's perspective, unlinkable)." [RFC6973] Impacts: - Right to non-discrimination - Right to freedom of assembly and association 6.2.11. AccessibilityQuestion(s):Questions: - Is your protocol designed to provide an enabling environment for people who are not able-bodied? - Have you looked at the W3C Web Accessibility Initiative [W3CAccessibility] for examples and guidance? Explanation: The Internet is fundamentally designed to work for all people, whatever their hardware, software, language, culture, location, or physical or mental ability. When the Internet meets this goal, it is accessible to people with a diverse range of hearing, movement, sight, and cognitiveabilityabilities [W3CAccessibility].SometimesSometimes, in the design of protocols, websites, web technologies, or web tools, barriersare createdthat exclude people from using theWeb.Web are created. Example: The HTML protocol as defined in [HTML5] specifically requires that (with a few exceptions) every image must have analt"alt" attribute(with a few exceptions)to ensure that images are accessible for people that cannot themselves decipher non-text content in web pages. Impacts: - Right to non-discrimination - Right to freedom of assembly and association - Right to education - Right to political participation 6.2.12. LocalizationQuestion(s):Questions: - Does your protocol uphold the standards of internationalization? - Havemadeyou taken any concrete steps towards localizing your protocol for relevant audiences? Explanation:LocalizationPer [W3Ci18nDef], "Localization refers to the adaptation of a product, application or document content to meet the language, cultural and other requirements of a specific target market (alocale) [W3Ci18nDef].'locale')." It is also described as the practice of translating an implementation to make it functional in a specific language or for users in a specific locale (seeInternationalization).Section 6.2.5 ("Internationalization")). Example: The Internet is a global medium, but many of its protocols and products are developed with a certain audience inmind, thatmind; this audience oftenshareshares particular characteristics like knowing how to read and write in ASCII and knowing English. This limits the ability of a large part of the world's online populationfrom usingto use the Internet in a way that is culturally and linguistically accessible. An example of a protocol that has taken into account the view that individuals like to have access to data in their native language can be found in[RFC5646]. This[RFC5646]; such a protocollabelswould label the information content with an identifier for the language in which it iswritten. And this allowswritten and would allow information to be presented in more than one language. Impacts: - Right to non-discrimination - Right to participate in cultural life,artsarts, and science - Right to freedom of expression 6.2.13. DecentralizationQuestion(s):Questions: - Can your protocol be implemented without one single point of control? - If applicable, can your protocol be deployed in a federated manner? - What is the potential for discrimination against users of your protocol?How can the use of- Can your protocol be used to negatively implicateusers?users (e.g., incrimination, accusation)? - Does your protocol create additional centralized points of control? Explanation: Decentralization is one of the central technical concepts of the architecture ofthe networks,networks and is embraced as such by the IETF [RFC3935]. It refers to the absence or minimization of centralized points ofcontrol; acontrol -- "a feature that is assumed to make it easy for new users to join and new uses tounfoldunfold" [Brown]. It also reduces issues surrounding single points offailure,failure and distributes the network such that it continues to function if one or several nodes are disabled. With the commercialization of the Internet in the early1990's1990s, there has been a slowmove to movetrend toward moving away from decentralization, to the detriment oftheany technical benefitsofthat having a decentralizedInternet.Internet otherwise provides. Example: The bits traveling the Internet are increasingly susceptible to monitoring and censorship, from both governments andInternet service providers,ISPs, as well as third (malicious) parties. The ability to monitor and censor is further enabled bytheincreased centralization of thenetwork that createsnetwork, creating central infrastructure points that can be tappedin to.into. The creation ofpeer-to-peerP2P networks and the development of voice-over-IP protocols usingpeer- to-peerP2P technology in combination with a distributed hash table (DHT) for scalability are examples of how protocols can preserve decentralization [Pouwelse]. Impacts: - Right to freedom of expression - Right to freedom of assembly and association 6.2.14. ReliabilityQuestion(s):Questions: - Is your protocol fault tolerant? - Doesityour protocol degrade gracefully? - Can your protocol resist malicious degradation attempts? - Do you have a documented way to announce degradation? - Do you have measures in place for recovery or partial healing from failure? - Can your protocol maintain dependability and performance in the face of unanticipated changes or circumstances? Explanation: Reliability ensures that a protocol will execute its functionconsistently andconsistently, be error resistant as described, and function without unexpectedresult.results. A system that is reliable degenerates gracefully and will have a documented way to announce degradation. It also has mechanisms to recover from failuregracefully, andgracefully and, if applicable, to allow for partial healing. It is important here to draw a distinction between random degradation and malicious degradation. Many current attacks against TLS, for example, exploit TLS's ability to gracefully degrade to older ciphersuites -suites; from a functional perspective, this ability isgood. Fromgood, but from a security perspective,thisit can be very bad. As with confidentiality, the growth of the Internet and fostering innovation in servicesdependsdepend on users having confidence and trust [RFC3724] in the network. Forreliabilityreliability, it is necessary that services notifytheusers ifapacket delivery fails. In the case of real-timesystems in addition to the reliable deliverysystems, the protocol needs to safeguardtimeliness.timeliness in addition to providing reliable delivery. Example: In the modern IP stack structure, a reliable transport layer requires an indication that transport processing has successfully completed, such as the indication given by TCP's ACK message[RFC0793],[RFC793] and not simply an indication from the IP layer that the packet arrived. Similarly, anapplication layerapplication-layer protocol may require anapplication- specificapplication-specific acknowledgement that contains, among other things, a status code indicating the disposition of the request(See(see [RFC3724]). Impacts: - Right to freedom of expression - Right to security 6.2.15. ConfidentialityQuestion(s):Questions: - Does this protocol expose information related to identifiers or data? If so, does it do so to each of the other protocolentityentities (i.e., recipients, intermediaries, and enablers) [RFC6973]? - What options exist for protocol implementers to choose to limit the information shared with each entity? - What operational controls are available to limit the information shared with each entity? - What controls or consent mechanisms does the protocol define or require before personal data or identifiers are shared or exposed via the protocol? If no such mechanisms or controls are specified, is it expected that control and consent will be handled outside of the protocol? - Does the protocol provide ways for initiators to share different pieces of information with different recipients? If not, are there mechanisms that exist outside of the protocol to provide initiators with such control? - Does the protocol provide ways for initiators to limit which information is shared with intermediaries? If not, are there mechanisms that exist outside of the protocol to provide users with such control? - Is it expected that users will have relationships that govern the use of the information (contractual or otherwise) with those who operate these intermediaries? - Does the protocol prefer encryption overclear textcleartext operation? - Does the protocol provide ways for initiators to express individuals' preferences to recipients or intermediaries with regard to the collection, use, or disclosure of their personal data? Explanation:Confidentiality"Confidentiality" refers to keepingyour dataa user's data secret from unintended listeners [BCP72]. The growth of the Internet depends on users having confidence that the network protects their personal data [RFC1984]. Example: Protocols that do not encrypt their payload make the entire content of the communication available to the idealized attacker along theirpath.path [RFC7624]. Following the advice in [RFC3365], most such protocols have a secure variant that encrypts the payload for confidentiality, and these secure variants are seeing ever-wider deployment. A noteworthy exception is DNS [RFC1035], as DNSSEC[RFC4033]does[RFC4033] does not have confidentiality as a requirement. This implies that, in the absence of changes to the protocol as presently under development in the IETF's DNS Private Exchange (DPRIVE)working group,Working Group, all DNS queries and answers generated by the activities of any protocol are available to the attacker. When store-and-forward protocols are used (e.g., SMTP [RFC5321]), intermediaries leave this data subject to observation by an attacker that has compromised these intermediaries, unless the data is encryptedend-to-endend to end by the application-layer protocol or the implementation uses an encrypted store for this data [RFC7624]. Impacts: - Right to privacy - Right to security 6.2.16. IntegrityQuestion(s):Questions: - Does your protocol maintain,assureassure, and/or verify the accuracy of payload data? - Does your protocol maintain and assure the consistency of data? - Does your protocol in any way allowforthe data to be (intentionally or unintentionally) altered? Explanation:Integrity"Integrity" refers to the maintenance and assurance of the accuracy and consistency of data to ensure that it has not been (intentionally or unintentionally) altered. Example: Integrity verification of data is importantto preventfor preventing vulnerabilities andattacks, like man-in-the-middle-attacks.attacks such as man-in-the-middle attacks. These attacks happen when a third party (often for malicious reasons) intercepts a communication between two parties, inserting themselves in the middle and changing the content of the data. Inpracticepractice, this looks as follows: Alice wants to communicate with Bob. Corinne forges and sends a message to Bob, impersonating Alice. Bob cannot see that the data from Alice was altered by Corinne. Corinne intercepts and alters the communication as it is sent between Alice and Bob. Corinne is able to control the communication content. Impacts: - Right to freedom of expression - Right to security 6.2.17. AuthenticityQuestion(s):Questions: - Do you have sufficient measures in place to confirm the truth of an attribute of an entity or of a single piece ofdata or entity?data? - Cantheattributes get garbled along the way (seesecurity)?Section 6.2.4 ("Security"))? - Ifrelevantrelevant, have you implemented IPsec,DNSsec, HTTPSDNSSEC, HTTPS, and otherStandard Security Best Practices?standard security best practices? Explanation: Authenticity ensures that data does indeed come from the source it claims to come from. This is importantto preventfor preventing (1) certain attacks or (2) unauthorized access to, and useofof, data. Example: Authentication of data is importantto preventfor preventing vulnerabilities andattacks, like man-in-the-middle-attacks.attacks such as man-in-the-middle attacks. These attacks happen when a third party (often for malicious reasons) intercepts a communication between two parties, inserting themselves in the middle and posing as both parties. Inpracticepractice, this looks as follows: Alice wants to communicate with Bob. Alice sends data to Bob. Corinne intercepts the data sent to Bob. Corinne reads(and potentially alters)and alters the message to Bob. Bob cannot see that the data did not come from Alice but instead came from Corinne. When there is properauthenticationauthentication, the scenario would be as follows: Alice wants to communicate with Bob. Alice sends data to Bob. Corinne intercepts the data sent to Bob. Corinne reads and alters the message to Bob. Bob can see that the data did not come from Alice but instead came from Corinne. Impacts: - Right to privacy - Right to freedom of expression - Right to security 6.2.18. AdaptabilityQuestion(s):Questions: - Is your protocol written in such a way thatisit would be easy for other protocols to be developed on top ofit,it or to interact with it? - Does your protocol impact permissionlessinnovation? See 'Connectivity' above.innovation (see Section 6.2.1 ("Connectivity") above)? Explanation: Adaptability is closely interrelated with permissionlessinnovation,innovation; both maintain the freedom and ability to freely create and deploy new protocols on top of the communications constructs that currently exist.ItPermissionless innovation is at the heart of the Internet as we knowit, and toit. To maintainitsthe Internet's fundamentally opennature,nature and ensure that it can continue to develop, we need to be mindful of the impact of protocols on maintaining or reducing permissionlessinnovation to ensure the Internet can continue to develop.innovation. Example: WebRTC generates audio and/or video data. In order to ensure that WebRTC can be used in different locations by differentpartiesparties, it is important that standardJavascriptJavaScript APIsarebe developed to support applications from different voice service providers. Multiple parties will have similarcapabilities,capabilities; in order to ensure that all parties can build upon existingstandardsstandards, these standards need to beadaptable,adaptable and allow for permissionless innovation. Impacts: - Right to education -FreedomRight to freedom of expression -FreedomRight to freedom of assembly and association 6.2.19. Outcome TransparencyQuestion(s):Question: - Are the effects of your protocol fully and easily comprehensible, including with respect to unintended consequences of protocol choices? Explanation:certainCertain technicalchoicechoices may have unintended consequences. Example:lackLack of authenticity may lead to lack of integrity and negativeexternalities, of whichexternalities; spam is an example. Lack of data that could be used for billing and accounting can lead to so-called "free" arrangementswhichthat obscure the actual costs and distribution of thecosts,costs -- forexampleexample, (1) the barter arrangements that are commonly used for Internetinterconnection;interconnection and (2) the commercial exploitation of personal data for targetedadvertisingadvertising, which is the most common funding model for the so-called "free" services such as search engines and social networks. Impacts: -FreedomRight to freedom of expression -PrivacyRight to privacy -FreedomRight to freedom of assembly and association -AccessRight to access to information 7.Document StatusSecurity Considerations As this document discusses research, there are no security considerations. 8. IANA Considerations This documenthas been developed within the framework ofdoes not require any IANA actions. 9. Research Group Information The discussion list for the IRTF Human RightsProtocolsProtocol Considerations ResearchGroup, based on discussionsGroup is located at the email address <hrpc@ietf.org>. Information on thehrpc mailinglistgroup andduring hrpc sessions, where this document also has been extensively discussed. The document has received eleven in-depth reviewsinformation onlist, and received many comments from inside and outsidehow to subscribe to theIRTF and IETF community. The research group has reached consensus on publishing this document as informational research group consensus document. 8. Acknowledgements A special thanks to all memberslist are provided at <https://www.irtf.org/mailman/listinfo/hrpc>. Archives of thehrpc RG who contributed to this draft. The following deserve a special mention:list can be found at <https://www.irtf.org/mail-archive/web/hrpc/current/index.html>. 10. Informative References [Ababil] Danchev, D., "Dissecting 'Operation Ababil' -Joana Varon for helping draft the first iteration of the methodology, previous drafts and the direction ofan OSINT Analysis", September 2012, <http://ddanchev.blogspot.be/ 2012/09/dissecting-operation-ababil-osint.html>. [Abbate] Abbate, J., "Inventing thefilm Net of RightsInternet", MIT Press, 2000, <https://mitpress.mit.edu/books/inventing-internet>. [Adrian] Adrian, D., Bhargavan, K., Durumeric, Z., Gaudry, P., Green, M., Halderman, J., Heninger, N., Springall, D., Thome, E., Valenta, L., VanderSloot, B., Wustrow, E., Zanella-Beguelin, S., andworking on the interviews at IETF92P. Zimmermann, "Imperfect Forward Secrecy: How Diffie-Hellman Fails inDallas. - Daniel Kahn Gillmor (dkg) for helping with the first iterationPractice", Proceedings of theglossary as well as a lot22nd ACM SIGSAC Conference on Computer and Communications Security, pp. 5-17, DOI 10.1145/2810103.2813707, October 2015. [Alshalan-etal] Alshalan, A., Pisharody, S., and D. Huang, "A Survey oftechnical guidance, supportMobile VPN Technologies", IEEE Communications Surveys & Tutorials, Volume 18, Issue 2, pp. 1177-1196, DOI 10.1109/COMST.2015.2496624, 2016, <http://ieeexplore.ieee.org/ document/7314859/?arnumber=7314859>. [APIP] Naylor, D., Mukerjee, M., andlanguage suggestions. - Claudio Guarnieri for writingP. Steenkiste, "Balancing accountability and privacy in thefirst iterationsnetwork", SIGCOMM '14, Proceedings of thecase studies2014 ACM Conference onVPN, HTTP,SIGCOMM, pp. 75-86, DOI 10.1145/2740070.2626306, October 2014, <https://dl.acm.org/citation.cfm?id=2626306>. [Appelbaum] Appelbaum, J., Gibson, A., Goetz, J., Kabisch, V., Kampf, L., andPeer to Peer. - Will Scott for writingL. Ryge, "NSA targets thefirst iterations of the case studies on DNS, IP, XMPP. - Avri Doria for proposing writing a glossary in the first place, help with writing the initial proposals and Internet Drafts, her reviews and contributions to the glossary. and Stephane Bortzmeyer, John Curran, Barry Shein, Joe Hall, Joss Wright, Harry Halpin, and Tim Sammut who made a lot of excellent suggestions, many of which found their way directly into the text. We want to thank Amelia Andersdotter, Stephen Farrell, Stephane Bortzemeyer, Shane Kerr, Giovane Moura, James Gannon, Alissa Cooper, Andrew Sullivan, S. Moonesamy, Roland Bless and Scott Craig for their reviews and testing the HRPC guidelines in the wild. We would also like to thank Molly Sauter, Arturo Filasto, Nathalie Marechal, Eleanor Saitta, Richard Hill and all others who provided input on the draft or the conceptualization of the idea. Thanks to Edward Snowden for his comments regarding the impact of protocols on the rights of users at IETF93. 9. Security Considerations As this document concerns a research document, there are no security considerations. 10. IANA Considerations This document has no actions for IANA. 11. Research Group Information The discussion list for the IRTF Human Rights Protocol Considerations Research Group is located at the e-mail address hrpc@ietf.org [3]. Information on the group and information on how to subscribe to the list is at https://www.irtf.org/mailman/listinfo/hrpc Archives of the list can be found at: https://www.irtf.org/mail- archive/web/hrpc/current/index.html 12. References 12.1. 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[Marquis-Boire] Marquis-Boire, M., "Schrodinger's Cat Video and the Death of Clear-Text", August 2014,<https://citizenlab.org/2014/08/cat- video-and-the-death-of-clear-text/>.<https://citizenlab.org/ 2014/08/cat-video-and-the-death-of-clear-text/>. [Meyer] Meyer, J., "Defining and Evaluating Resilience: A PerformabilityPerspective,Perspective", presentation at International Workshop on Performability Modeling of Computer and CommunicationSystems.",Systems, September 2009. [Mueller] Mueller, M., "Networks andStates",States: The Global Politics of Internet Governance", MITPress ,Press, DOI 10.7551/mitpress/9780262014595.001.0001, 2010, <https://mitpress.mit.edu/books/networks-and-states>. [Musiani] Musiani, F., "Giants, Dwarfs and Decentralized Alternatives to Internet-basedServices -Services: An Issue of Internet Governance",WestministerWestminster Papers in Communication andCulture ,Culture, 10(1), pp. 81-94, DOI 10.16997/wpcc.214, 2015,<http://doi.org/10.16997/wpcc.214>. [namecoin]<https://www.westminsterpapers.org/ articles/10.16997/wpcc.214/>. [Namecoin] Namecoin,"Namecoin - Decentralized secure names","Namecoin", 2015, <https://namecoin.info/>.[natusage][NATusage] Maier, G., Schneider, F., and A. Feldmann, "NAT usage in Residential Broadband networks", PAM: International Conference on Passive and Active Network Measurement Lecture Notes in Computer Science, Volume 6579, Springer, Berlin and Heidelberg, DOI 10.1007/978-3-642-19260-9_4, 2011, <http://www.icsi.berkeley.edu/pubs/networking/ NATusage11.pdf>. [NETmundial] NETmundial, "NETmundial Multistakeholder Statement", April 2014,<http://netmundial.br/wp-content/uploads/2014/04/ NETmundial-Multistakeholder-Document.pdf>. [newegg]<http://netmundial.br/wp-content/ uploads/2014/04/NETmundial-Multistakeholder-Document.pdf>. [Newegg] Mullin, J., "Newegg on trial: Mystery company TQP rewrites the history of encryption", November 2013,<http://arstechnica.com/ tech-policy/2013/11/newegg-on-trial-mystery-company-tqp- re-writes-the-history-of-encryption/>.<http://arstechnica.com/tech-policy/2013/11/newegg-on- trial-mystery-company-tqp-re-writes-the-history-of- encryption/>. [notewell] IETF, "Note Well", 2015,<https://www.ietf.org/about/note- well.html>.<https://www.ietf.org/about/note-well.html>. [patentpolicy]W3C,Weitzner, D., Ed., "W3C Patent Policy", World Wide Web Consortium, February 2004, <https://www.w3.org/Consortium/Patent-Policy-20040205/>. [Penney] Penney, J., "Chilling Effects: Online Surveillance and Wikipedia Use", 2016, <http://papers.ssrn.com/sol3/ papers.cfm?abstract_id=2769645>. [Peterson] Peterson, A., Gellman, B., and A. Soltani, "Yahoo to make SSL encryption the default for Webmail users. Finally.", October 2013,<http://gmailblog.blogspot.de/2010/01/ default-https-access-for-gmail.html>.<https://www.washingtonpost.com/ news/the-switch/wp/2013/10/14/ yahoo-to-make-ssl-encryption-the-default- for-webmail-users-finally/?utm_term=.a17eca45ddfe>. [PETS2015VPN]Pera,Perta, V., Barbera, M., Tyson, G., Haddadi, H., and A. Mei, "A Glance through the VPN LookingGlass",Glass: IPv6 Leakage and DNS Hijacking in Commercial VPN clients", DOI 10.1515/popets-2015-0006, 2015, <http://www.eecs.qmul.ac.uk/~hamed/papers/ PETS2015VPN.pdf>.[pidgin] js, .[Pidgin] js and Pidgin Developers,"-XMPP-"[XMPP] Invisible mode violating standard",July 2015,2007, <https://developer.pidgin.im/ticket/4322>. [Pouwelse] Pouwelse,Ed,J., Ed., "Media withoutcensorship", 2012, <https://tools.ietf.org/html/draft-pouwelse-censorfree- scenarios>.censorship (CensorFree) scenarios", Work in Progress, draft-pouwelse-censorfree- scenarios-02, October 2012. [Rachovitsa] Rachovitsa, A., "Engineering'Privacyand lawyering privacy byDesign' in the Internet Protocols - Understanding Online Privacydesign: understanding online privacy both as aTechnical and a Human Rights Issue in the Face of Pervasive Monitoring",technical and an international human rights issue", International Journal of Law and InformationTechnology , 2015, <https://www.ietf.org/mail- archive/web/hrpc/current/pdfRBnRYFeVsm.pdf>. [RFC0226] Karp, P., "Standardization of host mnemonics", RFC 226,Technology, Volume 24, Issue 4, pp. 374-399, DOI10.17487/RFC0226, September 1971, <http://www.rfc-editor.org/info/rfc226>. [RFC0760]10.1093/ijlit/eaw012, December 2016, <https://academic.oup.com/ijlit/ article/24/4/374/2566975/ Engineering-and-lawyering-privacy-by-design>. [RFC760] Postel, J., "DoD standard Internet Protocol", RFC 760, DOI 10.17487/RFC0760, January 1980,<http://www.rfc-editor.org/info/rfc760>. [RFC0791]<https://www.rfc-editor.org/info/rfc760>. [RFC791] Postel, J., "Internet Protocol", STD 5, RFC 791, DOI 10.17487/RFC0791, September 1981,<http://www.rfc-editor.org/info/rfc791>. [RFC0793]<https://www.rfc-editor.org/info/rfc791>. [RFC793] Postel, J., "Transmission Control Protocol", STD 7, RFC 793, DOI 10.17487/RFC0793, September 1981,<http://www.rfc-editor.org/info/rfc793>. [RFC0894]<https://www.rfc-editor.org/info/rfc793>. [RFC894] Hornig, C., "A Standard for the Transmission of IP Datagrams over Ethernet Networks", STD 41, RFC 894, DOI 10.17487/RFC0894, April 1984,<http://www.rfc-editor.org/info/rfc894>.<https://www.rfc-editor.org/info/rfc894>. [RFC1035] Mockapetris, P., "Domain names - implementation and specification", STD 13, RFC 1035, DOI 10.17487/RFC1035, November 1987,<http://www.rfc-editor.org/info/rfc1035>.<https://www.rfc-editor.org/info/rfc1035>. [RFC1122] Braden, R., Ed., "Requirements for Internet Hosts - Communication Layers", STD 3, RFC 1122, DOI 10.17487/RFC1122, October 1989,<http://www.rfc-editor.org/info/rfc1122>.<https://www.rfc-editor.org/info/rfc1122>. [RFC1958] Carpenter, B., Ed., "Architectural Principles of the Internet", RFC 1958, DOI 10.17487/RFC1958, June 1996,<http://www.rfc-editor.org/info/rfc1958>.<https://www.rfc-editor.org/info/rfc1958>. [RFC1984] IAB and IESG, "IAB and IESG Statement on Cryptographic Technology and the Internet", BCP 200, RFC 1984, DOI 10.17487/RFC1984, August 1996,<http://www.rfc-editor.org/info/rfc1984>.<https://www.rfc-editor.org/info/rfc1984>. [RFC2026] Bradner, S., "The Internet Standards Process -- Revision 3", BCP 9, RFC 2026, DOI 10.17487/RFC2026, October 1996,<http://www.rfc-editor.org/info/rfc2026>.<https://www.rfc-editor.org/info/rfc2026>. [RFC2277] Alvestrand, H., "IETF Policy on Character Sets and Languages", BCP 18, RFC 2277, DOI 10.17487/RFC2277, January 1998,<http://www.rfc-editor.org/info/rfc2277>. [RFC2460] Deering, S. and R. Hinden, "Internet Protocol, Version 6 (IPv6) Specification", RFC 2460, DOI 10.17487/RFC2460, December 1998, <http://www.rfc-editor.org/info/rfc2460>.<https://www.rfc-editor.org/info/rfc2277>. [RFC2775] Carpenter, B., "Internet Transparency", RFC 2775, DOI 10.17487/RFC2775, February 2000,<http://www.rfc-editor.org/info/rfc2775>.<https://www.rfc-editor.org/info/rfc2775>. [RFC3022] Srisuresh, P. and K. Egevang, "Traditional IP Network Address Translator (Traditional NAT)", RFC 3022, DOI 10.17487/RFC3022, January 2001,<http://www.rfc-editor.org/info/rfc3022>.<https://www.rfc-editor.org/info/rfc3022>. [RFC3365] Schiller, J., "Strong Security Requirements for Internet Engineering Task Force Standard Protocols", BCP 61, RFC 3365, DOI 10.17487/RFC3365, August 2002,<http://www.rfc-editor.org/info/rfc3365>.<https://www.rfc-editor.org/info/rfc3365>. [RFC3439] Bush, R. and D. Meyer, "Some Internet Architectural Guidelines and Philosophy", RFC 3439, DOI 10.17487/RFC3439, December 2002, <https://www.rfc-editor.org/info/rfc3439>. [RFC3536] Hoffman, P., "Terminology Used in Internationalization in the IETF", RFC 3536, DOI 10.17487/RFC3536, May 2003,<http://www.rfc-editor.org/info/rfc3536>.<https://www.rfc-editor.org/info/rfc3536>. [RFC3724] Kempf, J., Ed., Austein, R., Ed., and IAB, "The Rise of the Middle and the Future of End-to-End: Reflections on the Evolution of the Internet Architecture", RFC 3724, DOI 10.17487/RFC3724, March 2004,<http://www.rfc-editor.org/info/rfc3724>.<https://www.rfc-editor.org/info/rfc3724>. [RFC3935] Alvestrand, H., "A Mission Statement for the IETF", BCP 95, RFC 3935, DOI 10.17487/RFC3935, October 2004,<http://www.rfc-editor.org/info/rfc3935>. [RFC3979] Bradner, S., Ed., "Intellectual Property Rights in IETF Technology", RFC 3979, DOI 10.17487/RFC3979, March 2005, <http://www.rfc-editor.org/info/rfc3979>.<https://www.rfc-editor.org/info/rfc3935>. [RFC4033] Arends, R., Austein, R., Larson, M., Massey, D., and S. Rose, "DNS Security Introduction and Requirements", RFC 4033, DOI 10.17487/RFC4033, March 2005,<http://www.rfc-editor.org/info/rfc4033>.<https://www.rfc-editor.org/info/rfc4033>. [RFC4084] Klensin, J., "Terminology for Describing Internet Connectivity", BCP 104, RFC 4084, DOI 10.17487/RFC4084, May 2005,<http://www.rfc-editor.org/info/rfc4084>.<https://www.rfc-editor.org/info/rfc4084>. [RFC4101] Rescorla, E. and IAB, "Writing Protocol Models", RFC 4101, DOI 10.17487/RFC4101, June 2005,<http://www.rfc-editor.org/info/rfc4101>.<https://www.rfc-editor.org/info/rfc4101>. [RFC4941] Narten, T., Draves, R., and S. Krishnan, "Privacy Extensions for Stateless Address Autoconfiguration in IPv6", RFC 4941, DOI 10.17487/RFC4941, September 2007,<http://www.rfc-editor.org/info/rfc4941>.<https://www.rfc-editor.org/info/rfc4941>. [RFC4949] Shirey, R., "Internet Security Glossary, Version 2", FYI 36, RFC 4949, DOI 10.17487/RFC4949, August 2007,<http://www.rfc-editor.org/info/rfc4949>.<https://www.rfc-editor.org/info/rfc4949>. [RFC5246] Dierks, T. and E. Rescorla, "The Transport Layer Security (TLS) Protocol Version 1.2", RFC 5246, DOI 10.17487/RFC5246, August 2008,<http://www.rfc-editor.org/info/rfc5246>.<https://www.rfc-editor.org/info/rfc5246>. [RFC5321] Klensin, J., "Simple Mail Transfer Protocol", RFC 5321, DOI 10.17487/RFC5321, October 2008,<http://www.rfc-editor.org/info/rfc5321>.<https://www.rfc-editor.org/info/rfc5321>. [RFC5646] Phillips, A.,Ed.Ed., and M. Davis, Ed., "Tags for Identifying Languages", BCP 47, RFC 5646, DOI 10.17487/RFC5646, September 2009,<http://www.rfc-editor.org/info/rfc5646>.<https://www.rfc-editor.org/info/rfc5646>. [RFC5694] Camarillo, G.,Ed.Ed., and IAB, "Peer-to-Peer (P2P) Architecture: Definition, Taxonomies, Examples, and Applicability", RFC 5694, DOI 10.17487/RFC5694, November 2009,<http://www.rfc-editor.org/info/rfc5694>.<https://www.rfc-editor.org/info/rfc5694>. [RFC5944] Perkins, C., Ed., "IP Mobility Support for IPv4, Revised", RFC 5944, DOI 10.17487/RFC5944, November 2010,<http://www.rfc-editor.org/info/rfc5944>.<https://www.rfc-editor.org/info/rfc5944>. [RFC6101] Freier, A., Karlton, P., and P. Kocher, "The Secure Sockets Layer (SSL) Protocol Version 3.0", RFC 6101, DOI 10.17487/RFC6101, August 2011,<http://www.rfc-editor.org/info/rfc6101>.<https://www.rfc-editor.org/info/rfc6101>. [RFC6108] Chung, C., Kasyanov, A., Livingood, J., Mody, N., and B. Van Lieu, "Comcast's Web Notification System Design", RFC 6108, DOI 10.17487/RFC6108, February 2011,<http://www.rfc-editor.org/info/rfc6108>.<https://www.rfc-editor.org/info/rfc6108>. [RFC6120] Saint-Andre, P., "Extensible Messaging and Presence Protocol (XMPP): Core", RFC 6120, DOI 10.17487/RFC6120, March 2011,<http://www.rfc-editor.org/info/rfc6120>.<https://www.rfc-editor.org/info/rfc6120>. [RFC6365] Hoffman, P. and J. Klensin, "Terminology Used in Internationalization in the IETF", BCP 166, RFC 6365, DOI 10.17487/RFC6365, September 2011,<http://www.rfc-editor.org/info/rfc6365>.<https://www.rfc-editor.org/info/rfc6365>. [RFC6698] Hoffman, P. and J. Schlyter, "The DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS) Protocol: TLSA", RFC 6698, DOI 10.17487/RFC6698, August 2012,<http://www.rfc-editor.org/info/rfc6698>.<https://www.rfc-editor.org/info/rfc6698>. [RFC6701] Farrel, A. and P. Resnick, "Sanctions Available for Application to Violators of IETF IPR Policy", RFC 6701, DOI 10.17487/RFC6701, August 2012,<http://www.rfc-editor.org/info/rfc6701>.<https://www.rfc-editor.org/info/rfc6701>. [RFC6797] Hodges, J., Jackson, C., and A. Barth, "HTTP Strict Transport Security (HSTS)", RFC 6797, DOI 10.17487/RFC6797, November 2012,<http://www.rfc-editor.org/info/rfc6797>.<https://www.rfc-editor.org/info/rfc6797>. [RFC6973] Cooper, A., Tschofenig, H., Aboba, B., Peterson, J., Morris, J., Hansen, M., and R. Smith, "Privacy Considerations for Internet Protocols", RFC 6973, DOI 10.17487/RFC6973, July 2013,<http://www.rfc-editor.org/info/rfc6973>.<https://www.rfc-editor.org/info/rfc6973>. [RFC7230] Fielding, R., Ed., and J. Reschke, Ed., "Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing", RFC 7230, DOI 10.17487/RFC7230, June 2014, <https://www.rfc-editor.org/info/rfc7230>. [RFC7231] Fielding, R., Ed., and J. Reschke, Ed., "Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content", RFC 7231, DOI 10.17487/RFC7231, June 2014, <https://www.rfc-editor.org/info/rfc7231>. [RFC7232] Fielding, R., Ed., and J. Reschke, Ed., "Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests", RFC 7232, DOI 10.17487/RFC7232, June 2014, <https://www.rfc-editor.org/info/rfc7232>. [RFC7233] Fielding, R., Ed., Lafon, Y., Ed., and J. Reschke, Ed., "Hypertext Transfer Protocol (HTTP/1.1): Range Requests", RFC 7233, DOI 10.17487/RFC7233, June 2014, <https://www.rfc-editor.org/info/rfc7233>. [RFC7234] Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, Ed., "Hypertext Transfer Protocol (HTTP/1.1): Caching", RFC 7234, DOI 10.17487/RFC7234, June 2014, <https://www.rfc-editor.org/info/rfc7234>. [RFC7235] Fielding, R., Ed., and J. Reschke, Ed., "Hypertext Transfer Protocol (HTTP/1.1): Authentication", RFC 7235, DOI 10.17487/RFC7235, June 2014, <https://www.rfc-editor.org/info/rfc7235>. [RFC7236] Reschke, J., "Initial Hypertext Transfer Protocol (HTTP) Authentication Scheme Registrations", RFC 7236, DOI 10.17487/RFC7236, June 2014, <https://www.rfc-editor.org/info/rfc7236>. [RFC7237] Reschke, J., "Initial Hypertext Transfer Protocol (HTTP) Method Registrations", RFC 7237, DOI 10.17487/RFC7237, June 2014, <https://www.rfc-editor.org/info/rfc7237>. [RFC7258] Farrell, S. and H. Tschofenig, "Pervasive Monitoring Is an Attack", BCP 188, RFC 7258, DOI 10.17487/RFC7258, May 2014,<http://www.rfc-editor.org/info/rfc7258>.<https://www.rfc-editor.org/info/rfc7258>. [RFC7469] Evans, C., Palmer, C., and R. Sleevi, "Public Key Pinning Extension for HTTP", RFC 7469, DOI 10.17487/RFC7469, April 2015,<http://www.rfc-editor.org/info/rfc7469>.<https://www.rfc-editor.org/info/rfc7469>. [RFC7540] Belshe, M., Peon, R., and M. Thomson, Ed., "Hypertext Transfer Protocol Version 2 (HTTP/2)", RFC 7540, DOI 10.17487/RFC7540, May 2015,<http://www.rfc-editor.org/info/rfc7540>.<https://www.rfc-editor.org/info/rfc7540>. [RFC7574] Bakker, A., Petrocco, R., and V. Grishchenko, "Peer-to- Peer Streaming Peer Protocol (PPSPP)", RFC 7574, DOI 10.17487/RFC7574, July 2015,<http://www.rfc-editor.org/info/rfc7574>.<https://www.rfc-editor.org/info/rfc7574>. [RFC7624] Barnes, R., Schneier, B., Jennings, C., Hardie, T., Trammell, B., Huitema, C., and D. Borkmann, "Confidentiality in the Face of Pervasive Surveillance: A Threat Model and Problem Statement", RFC 7624, DOI 10.17487/RFC7624, August 2015,<http://www.rfc-editor.org/info/rfc7624>.<https://www.rfc-editor.org/info/rfc7624>. [RFC7626] Bortzmeyer, S., "DNS Privacy Considerations", RFC 7626, DOI 10.17487/RFC7626, August 2015,<http://www.rfc-editor.org/info/rfc7626>.<https://www.rfc-editor.org/info/rfc7626>. [RFC7725] Bray, T., "An HTTP Status Code to Report Legal Obstacles", RFC 7725, DOI 10.17487/RFC7725, February 2016,<http://www.rfc-editor.org/info/rfc7725>.<https://www.rfc-editor.org/info/rfc7725>. [RFC7754] Barnes, R., Cooper, A., Kolkman, O., Thaler, D., and E. Nordmark, "Technical Considerations for Internet Service Blocking and Filtering", RFC 7754, DOI 10.17487/RFC7754, March 2016,<http://www.rfc-editor.org/info/rfc7754>.<https://www.rfc-editor.org/info/rfc7754>. [RFC7858] Hu, Z., Zhu, L., Heidemann, J., Mankin, A., Wessels, D., and P. Hoffman, "Specification for DNS over Transport Layer Security (TLS)", RFC 7858, DOI 10.17487/RFC7858, May 2016,<http://www.rfc-editor.org/info/rfc7858>.<https://www.rfc-editor.org/info/rfc7858>. [RFC8164] Nottingham, M. and M. Thomson, "Opportunistic Security for HTTP/2", RFC 8164, DOI 10.17487/RFC8164, May 2017,<http://www.rfc-editor.org/info/rfc8164>. [Richie] Richie,<https://www.rfc-editor.org/info/rfc8164>. [RFC8179] Bradner, S. and J. Contreras, "Intellectual Property Rights in IETF Technology", BCP 79, RFC 8179, DOI 10.17487/RFC8179, May 2017, <https://www.rfc-editor.org/info/rfc8179>. [RFC8200] Deering, S. and R. Hinden, "Internet Protocol, Version 6 (IPv6) Specification", STD 86, RFC 8200, DOI 10.17487/RFC8200, July 2017, <https://www.rfc-editor.org/info/rfc8200>. [Rideout] Rideout, A., "Making security easier", July 2008, <http://gmailblog.blogspot.de/2008/07/ making-security-easier.html>. [Ritchie] Ritchie, J. and J. Lewis, "Qualitative ResearchPractice -Practice: A Guide for Social Science Students and Researchers",London Sage ,SAGE Publishing, London, 2003, <http://www.amazon.co.uk/ Qualitative-Research-Practice-Students-Researchers/ dp/0761971106>.[Rideout] Rideout, A., "Making security easier", 2008, <http://gmailblog.blogspot.de/2008/07/ making-security-easier.html>.[RSF]RSF,Reporters Without Borders (RSF), "Syria using 34 Blue CoatServersservers to spy on Internet users",2013, <https://rsf.org/en/news/syria-using-34- blue-coat-servers-spy-internet-users>.January 2016, <https://rsf.org/en/news/ syria-using-34-blue-coat-servers-spy-internet-users>. [Saltzer] Saltzer, J., Reed, D., and D. Clark, "End-to-End Arguments in System Design", ACMTOCS, VolTransactions on Computer Systems (TOCS), Volume 2, Number 4, pp. 277-288, DOI 10.1145/357401.357402, November1984, pp 277-288. ,1984. [Sandvine] Sandvine, "Sandvine: Over 70% Of North American Traffic Is Now Streaming Video And Audio", December 2015, <https://www.sandvine.com/pr/2015/12/7/sandvine-over-70- of-north-american-traffic-is-now-streaming-video-and- audio.html>. [Schillace] Schillace, S., "Default https access for Gmail", January 2010, <http://gmailblog.blogspot.de/2010/01/ default-https-access-for-gmail.html>. [Schneier] Schneier, B., "AttackingTor -Tor: how the NSA targets users' online anonymity", October 2013, <http://www.theguardian.com/world/2013/oct/04/ tor-attacks-nsa-users-online-anonymity>.[Schroeder] Schroeder, I. and B. Schmidt, "Introduction - Violent Imaginaries and Violent Practice", London and New York Routledge , 2001, <http://resourcelists.st- andrews.ac.uk/items/ BFC20363-67B0-B3EF-EA48-13E5230E7899.html>. [spiegel][SPIEGEL] SPIEGEL, "Prying Eyes - Inside the NSA's War on Internet Security", December 2014, <http://www.spiegel.de/international/germany/ inside-the-nsa-s-war-on-internet-security-a-1010361.html>. [sslstrip] Marlinspike, M., "Software >> sslstrip", 2011, <https://moxie.org/software/sslstrip/>. [techyum] Violet,.,"Official - vb.ly Link Shortener Seized by Libyan Government", October 2010, <http://techyum.com/2010/10/ official-vb-ly-link-shortener-seized-by-libyan- government/>.[torproject][TorProject] The Tor Project,., "Tor Project - Anonymity"Anonymity Online",2007, <https://www.torproject.org/>. [torrentfreak1] Van der Sar, E., "Proposal for research on human rights protocol considerations", 2015, <https://torrentfreak.com/ is-your-isp-messing-with-bittorrent-traffic-find-out- 140123/>.2006, <https://www.torproject.org/>. [torrentfreak1] Van der Sar, E., "Is Your ISP Messing With BitTorrent Traffic? Find Out", January 2014, <https://torrentfreak.com/is-your-isp-messing-with- bittorrent-traffic-find-out-140123/>. [torrentfreak2] Andy,., "LAWYERS SENT"Lawyers Sent 109,000PIRACY THREATS IN GERMANY DURINGPiracy Threats in Germany During 2013", March 2014,<https://torrentfreak.com/lawyers- sent-109000-piracy-threats-in-germany-during-<https://torrentfreak.com/ lawyers-sent-109000-piracy-threats-in-germany-during- 2013-140304/>.[tribler][Tribler] Delft University of Technology, Department EWI/PDS/ Tribler, "About Tribler", 2013,<https://www.tribler.org/ about.html>.<https://www.tribler.org/about.html>. [UDHR] United Nations General Assembly, "The Universal Declaration of Human Rights", 1948,<http://www.un.org/en/documents/udhr/>.<http://www.un.org/en/ universal-declaration-human-rights/index.html>. [UNGA2013] United Nations General Assembly, "UN General Assembly Resolution "The right to privacy in the digital age" (A/C.3/68/L.45)", 2013,<http://daccess-ods.un.org/TMP/1133732.05065727.html>.<https://documents-dds-ny.un.org/doc/UNDOC/LTD/N13/ 576/77/PDF/N1357677.pdf?OpenElement>. [UNHRC2016] United Nations Human Rights Council,"UN Human Rights Council Resolution"The promotion, protection and enjoyment of human rights on theInternet" (A/HRC/32/ L.20)",Internet", Resolution A/HRC/32/L.20, 2016,<https://documents-dds- ny.un.org/doc/UNDOC/LTD/G16/131/89/PDF/ G1613189.pdf?OpenElement>. [ververis] Vasilis,<http://ap.ohchr.org/documents/alldocs.aspx?doc_id=20340>. [Ververis] Ververis, V., Kargiotakis, G., Filasto, A., Fabian, B., and A. Alexandros, "Understanding Internet CensorshipPolicyPolicy: The Case of Greece", 5th USENIX Workshop on Free and Open Communications on the Internet (FOCI) '15, August 2015, <https://www.usenix.org/system/files/ conference/foci15/foci15-paper-ververis-update.pdf>. [W3CAccessibility] World Wide Web Consortium, "Accessibility", 2016, <https://www.w3.org/standards/webdesign/accessibility>. [W3Ci18nDef] Ishida, R. and S. Miller, "Localization vs. Internationalization", World Wide Web Consortium, April 2015, <http://www.w3.org/International/ questions/qa-i18n.en>. [wikileaks] Sladek, T. and E. Broese, "Market Survey: Detection & Filtering Solutions to Identify File Transfer of Copyright Protected Content for Warner Bros. and movielabs", 2011, <https://wikileaks.org/sony/docs/05/docs/Anti-Piracy/CDSA/ EANTC-Survey-1.5-unsecured.pdf>. [WP-Tempora] Wikipedia, "Tempora", September 2017, <https://en.wikipedia.org/wiki/Tempora>. [WSJ] Sonne, P. and M. Coker, "Firms Aided Libyan Spies", The Wall Street Journal, August 2011, <http://www.wsj.com/articles/ SB10001424053111904199404576538721260166388>. [WynsbergheMoura] Nguyen, B., Ed., van Wynsberghe, A., van Wynsberghe, A., and G. Moreira Moura, "The concept of embedded values and the example of internet security", June 2013, <http://doc.utwente.nl/87095/>. [XMPP-Manifesto] Saint-Andre, P. and XMPP Operators, "A Public Statement Regarding Ubiquitous Encryption on the XMPP Network", March 2014, <https://raw.githubusercontent.com/ stpeter/manifesto/master/manifesto.txt>. [Zittrain] Zittrain, J., "The Future of the Internet - And How to Stop It", Yale University Press & Penguin UK, 2008, <https://dash.harvard.edu/bitstream/handle/1/4455262/ Zittrain_Future%20of%20the%20Internet.pdf?sequence=1>. Acknowledgements A special thanks to all members of the HRPC Research Group who contributed to this document. The following deserve a special mention: - Joana Varon for helping draft the first iteration of the methodology and previous drafts, and for directing the film "Net of Rights" and working on the interviews at IETF 92 in Dallas. - Daniel Kahn Gillmor (dkg) for helping with the first iteration of the glossary (Section 2) as well as a lot of technical guidance, support, and language suggestions. - Claudio Guarnieri for writing the first iterations of the case studies on VPNs, HTTP, and P2P. -The CaseWill Scott for writing the first iterations ofGreece", 2015, <https://www.usenix.org/system/files/conference/foci15/ foci15-paper-ververis-update.pdf>. [W3CAccessibility] W3C, "Accessibility", 2015, <https://www.w3.org/standards/webdesign/accessibility>. [W3Ci18nDef] W3C, "Localization vs. Internationalization", 2010, <http://www.w3.org/International/questions/qa-i18n.en>. [wikileaks] Sladek, T.the case studies on DNS, IP, andE. Broese, "Market Survey : Detection & Filtering Solutions to Identify File Transfer of Copyright Protected ContentXMPP. - Avri Doria forWarner Bros.proposing writing a glossary in the first place, help with writing the initial proposals andmovielabs", 2011, <https://wikileaks.org/sony/docs/05/docs/Anti-Piracy/CDSA/ EANTC-Survey-1.5-unsecured.pdf>. [WP-Tempora] Wikipedia, "Tempora", 2016, <https://en.wikipedia.org/wiki/Tempora>. [WSJ] Sonne, P.Internet-Drafts, her reviews, andM. Coker, "Firms Aided Libyan Spies", 2011, <http://www.wsj.com/articles/ SB10001424053111904199404576538721260166388>. [WynsbergheMoura] Wynsberghe, A.her contributions to the glossary. Thanks also to Stephane Bortzmeyer, John Curran, Barry Shein, Joe Hall, Joss Wright, Harry Halpin, andG. Moura, "The conceptTim Sammut, who made a lot ofembedded valuesexcellent suggestions, many of which found their way directly into the text. We want to thank Amelia Andersdotter, Stephen Farrell, Stephane Bortzmeyer, Shane Kerr, Giovane Moura, James Gannon, Alissa Cooper, Andrew Sullivan, S. Moonesamy, Roland Bless, and Scott Craig for their reviews and for testing theexample of internet security", 2013, <http://doc.utwente.nl/87095/>. [xmppmanifesto] Saint-Andre, P.HRPC guidelines in the wild. We would also like to thank Molly Sauter, Arturo Filasto, Nathalie Marechal, Eleanor Saitta, Richard Hill, and. XMPP Operators, "A Public Statement Regarding Ubiquitous Encryptionall others who provided input on this document or theXMPP Network", 2014, <https://raw.githubusercontent.com/stpeter/manifesto/ master/manifesto.txt>. [Zittrain] Zittrain, J., "The Futureconceptualization of theInternet - And Howidea. Thanks toStop It", Yale University Press , 2008, <https://dash.harvard.edu/bitstream/handle/1/4455262/ Zittrain_Future%20of%20the%20Internet.pdf?sequence=1>. 12.2. URIs [1] mailto:node@domain/home [2] mailto:node@domain/work [3] mailto:hrpc@ietf.orgEdward Snowden for his comments at IETF 93 in Prague regarding the impact of protocols on the rights of users. Authors' Addresses Niels ten Oever ARTICLE 19EMail: niels@article19.orgEmail: mail@nielstenoever.net Corinne Cath Oxford Internet InstituteEMail:Email: corinnecath@gmail.com