1 Notion of Anonymity 1
1.1 Term and Meaning of Anonymity 1
1.2 Underlying Motivations of Anonymity 2
1.3 Characteristics of Communication 3
1.3.1 Real World 3
1.3.2 Particularities of the Online World 4
References 9
2 Anonymity Challenges in the Internet 11
2.1 Risks for Anonymous Use of Internet Services 11
2.1.1 Information Gathered by IP Addresses 11
2.1.2 Storage of Recorded Data 13
2.1.3 Insufficient Data Security Measures 13
2.2 Technical Implementation of Anonymizing Services 15
2.2.1 Privacy Enhancing Technologies in General 15
2.2.2 Anonymizing Networking Techniques 16
2.2.3 Virtue of Anonymizing Services 19
References 20
3 Legal Foundations of Anonymity 23
3.1 International Legal Framework 23
3.1.1 United Nations 24
3.1.2 OECD 26
3.1.3 Council of Europe 26
3.1.4 European Union 29
3.2 Concretization of the Human Rights Protection Regime 35
3.2.1 Correlations of Anonymity and Privacy 35
3.2.2 Protection Regime of Privacy 36
References 40
4 Limitations of Anonymization 45
4.1 Factual Reasons for State Interventions 45
4.2 State Supervision in the Public Interest in General 46
4.2.1 Legitimate State Interests 46
4.2.2 Legal Bases for State Interventions 48
4.3 Combating Cybercrime 52
4.3.1 Subject Matter of Protection 52
4.3.2 Global Cybersecurity Agenda 53
4.3.3 Cybercrime Convention of Council of Europe 55
4.3.4 EU Agenda 57
4.4 Supervising Internet Traffic by Trojan Horse Software 58
4.4.1 Use of Trojan Horse Software by the German Government 58
4.4.2 Use of Trojan Horse Software by Other Governments 63
4.4.3 Concluding Legal Assessment 65
4.5 Enforcement of Copyright 66
References 69
5 Outlook 73