Debates rage about how, by whom, and to what extent cyberspace anonymity should be controlled. This volume aims to provide an insight into and an understanding of the concept of anonymity, and discusses technological developments and subsequently analyses anonymity from different angles. Areas covered include US and European court-sanctioned procedures to reveal identity, privacy interests, the right to anonymous speech, implications of the Council of Europe's Cybercrime Convention, European data protection and data retention provisions, consumer protection and the private law implications of anonymous transactions by means of the Internet.