The second Privacy Enhancing Technologies workshop (PET2002), held April 14-15, 2002 in San Francisco, California, continued the enthusiasm and quality of the ?rst workshop in July 2000 (then called "Designing Privacy Enhancing Technologies: Design Issues in Anonymity and Unobservability," LNCS 2009). The workshop focused on the design and realization of anonymity and an- censorship services for the Internet and other communication networks. For c- venienceitwasheldattheCathedralHillHoteljustpriortotheTwelfthConf- ence on Computers, Freedom, and Privacy (CFP2002), but it was not formally a?liated with that conference. There were 48 submissions of which we accepted 17. The program committee listed on the next page made the di?cult decisions on which papers to accept, with additional reviewing help from Oliver Berthold, Sebastian Clauss, Lorrie Cranor, Stefan K.. opsell, Heinrich Langos, Nick Mathewson, and Sandra Ste- brecher. Thanks to all who helped and apologies to anyone we have overlooked. Thanks also to everyone who contributed a submission.Besides the contributed papers we were honored to have an invited talk by someone who as much as anyone could be said to have started the entire technology ?eld of anonymity and privacy: David Chaum. The talk covered his recently developed voting technology based on visual secret sharing, and as if thatweren'tenough,alsodescribednewprimitivesforelectroniccash.Therewas also a lively rump session, covering a variety of new and upcoming technologies.

Foreword from the Program Chairs These proceedings contain the papers selected for presentation at the 10th - ropean Symposium on Research in Computer Security (ESORICS), held S- tember 12–14, 2005 in Milan, Italy. In response to the call for papers 159 papers were submitted to the conf- ence. These paperswere evaluated on the basis of their signi?cance, novelty,and technical quality. Each paper was reviewed by at least three members of the program committee. The program committee meeting was held electronically, holding intensive discussion over a period of two weeks. Of the papers subm- ted, 27 were selected for presentation at the conference, giving an acceptance rate of about 16%. The conference program also includes an invited talk by Barbara Simons. There is a long list of people who volunteered their time and energy to put together the symposiom and who deserve acknowledgment. Thanks to all the members of the program committee, and the external reviewers, for all their hard workin evaluating and discussing papers. We are also very grateful to all those people whose work ensured a smooth organizational process: Pierangela Samarati, who served as General Chair, Claudio Ardagna, who served as P- licity Chair, Dieter Gollmann who served as Publication Chair and collated this volume, and Emilia Rosti and Olga Scotti for helping with local arrangements. Last, but certainly not least, our thanks go to all the authors who submitted papers and all the attendees. We hope you ?nd the program stimulating.

Foreword from the Program Chairs These proceedings contain the papers selected for presentation at the 10th - ropean Symposium on Research in Computer Security (ESORICS), held S- tember 12–14, 2005 in Milan, Italy. In response to the call for papers 159 papers were submitted to the conf- ence. These paperswere evaluated on the basis of their signi?cance, novelty,and technical quality. Each paper was reviewed by at least three members of the program committee. The program committee meeting was held electronically, holding intensive discussion over a period of two weeks. Of the papers subm- ted, 27 were selected for presentation at the conference, giving an acceptance rate of about 16%. The conference program also includes an invited talk by Barbara Simons. There is a long list of people who volunteered their time and energy to put together the symposiom and who deserve acknowledgment. Thanks to all the members of the program committee, and the external reviewers, for all their hard workin evaluating and discussing papers. We are also very grateful to all those people whose work ensured a smooth organizational process: Pierangela Samarati, who served as General Chair, Claudio Ardagna, who served as P- licity Chair, Dieter Gollmann who served as Publication Chair and collated this volume, and Emilia Rosti and Olga Scotti for helping with local arrangements. Last, but certainly not least, our thanks go to all the authors who submitted papers and all the attendees. We hope you ?nd the program stimulating.

The second Privacy Enhancing Technologies workshop (PET2002), held April 14-15, 2002 in San Francisco, California, continued the enthusiasm and quality of the ?rst workshop in July 2000 (then called "Designing Privacy Enhancing Technologies: Design Issues in Anonymity and Unobservability," LNCS 2009). The workshop focused on the design and realization of anonymity and an- censorship services for the Internet and other communication networks. For c- venienceitwasheldattheCathedralHillHoteljustpriortotheTwelfthConf- ence on Computers, Freedom, and Privacy (CFP2002), but it was not formally a?liated with that conference. There were 48 submissions of which we accepted 17. The program committee listed on the next page made the di?cult decisions on which papers to accept, with additional reviewing help from Oliver Berthold, Sebastian Clauss, Lorrie Cranor, Stefan K.. opsell, Heinrich Langos, Nick Mathewson, and Sandra Ste- brecher. Thanks to all who helped and apologies to anyone we have overlooked. Thanks also to everyone who contributed a submission.Besides the contributed papers we were honored to have an invited talk by someone who as much as anyone could be said to have started the entire technology ?eld of anonymity and privacy: David Chaum. The talk covered his recently developed voting technology based on visual secret sharing, and as if thatweren'tenough,alsodescribednewprimitivesforelectroniccash.Therewas also a lively rump session, covering a variety of new and upcoming technologies.

Foreword from the Program Chairs These proceedings contain the papers selected for presentation at the 10th - ropean Symposium on Research in Computer Security (ESORICS), held S- tember 12–14, 2005 in Milan, Italy. In response to the call for papers 159 papers were submitted to the conf- ence. These paperswere evaluated on the basis of their signi?cance, novelty,and technical quality. Each paper was reviewed by at least three members of the program committee. The program committee meeting was held electronically, holding intensive discussion over a period of two weeks. Of the papers subm- ted, 27 were selected for presentation at the conference, giving an acceptance rate of about 16%. The conference program also includes an invited talk by Barbara Simons. There is a long list of people who volunteered their time and energy to put together the symposiom and who deserve acknowledgment. Thanks to all the members of the program committee, and the external reviewers, for all their hard workin evaluating and discussing papers. We are also very grateful to all those people whose work ensured a smooth organizational process: Pierangela Samarati, who served as General Chair, Claudio Ardagna, who served as P- licity Chair, Dieter Gollmann who served as Publication Chair and collated this volume, and Emilia Rosti and Olga Scotti for helping with local arrangements. Last, but certainly not least, our thanks go to all the authors who submitted papers and all the attendees. We hope you ?nd the program stimulating.

Foreword from the Program Chairs These proceedings contain the papers selected for presentation at the 10th - ropean Symposium on Research in Computer Security (ESORICS), held S- tember 12–14, 2005 in Milan, Italy. In response to the call for papers 159 papers were submitted to the conf- ence. These paperswere evaluated on the basis of their signi?cance, novelty,and technical quality. Each paper was reviewed by at least three members of the program committee. The program committee meeting was held electronically, holding intensive discussion over a period of two weeks. Of the papers subm- ted, 27 were selected for presentation at the conference, giving an acceptance rate of about 16%. The conference program also includes an invited talk by Barbara Simons. There is a long list of people who volunteered their time and energy to put together the symposiom and who deserve acknowledgment. Thanks to all the members of the program committee, and the external reviewers, for all their hard workin evaluating and discussing papers. We are also very grateful to all those people whose work ensured a smooth organizational process: Pierangela Samarati, who served as General Chair, Claudio Ardagna, who served as P- licity Chair, Dieter Gollmann who served as Publication Chair and collated this volume, and Emilia Rosti and Olga Scotti for helping with local arrangements. Last, but certainly not least, our thanks go to all the authors who submitted papers and all the attendees. We hope you ?nd the program stimulating.