Information Hiding and Networking -- Hiding Intrusions: From the Abnormal to the Normal and Beyond -- Eliminating Steganography in Internet Traffic with Active Wardens -- Anonymity -- From a Trickle to a Flood: Active Attacks on Several Mix Types -- Limits of Anonymity in Open Environments -- Chaffinch: Confidentiality in the Face of Legal Threats -- Watermarking Fundamentals -- Nothing But a Kiss: A Novel and Accurate Approach to Assessing the Performance of Multidimensional Distortion-Compensated Dither Modulation -- Robustness and Efficiency of Non-linear Side-Informed Watermarking -- Security of Public Watermarking Schemes for Binary Sequences -- Watermarking Algorithms I -- Direct Embedding and Detection of RST Invariant Watermarks -- Robust Image Watermark Using Radon Transform and Bispectrum Invariants -- Audio Watermark Robustness to Desynchronization via Beat Detection -- Watermarking Algorithms II -- Robust Watermarking and Affine Registration of 3D Meshes -- Natural Language Watermarking and Tamperproofing -- Attacks on Watermarking Algorithms -- Cryptanalysis of UCLA Watermarking Schemes for Intellectual Property Protection -- Cryptanalysis of Discrete-Sequence Spread Spectrum Watermarks -- Detectors for Echo Hiding Systems -- Steganography Algorithms -- A Steganographic Embedding Undetectable by JPEG Compatibility Steganalysis -- Steganography Preserving Statistical Properties -- Bit-Plane Decomposition Steganography Combined with JPEG2000 Compression -- Steganalysis I -- Steganalysis of JPEG Images: Breaking the F5 Algorithm -- Detecting Low Embedding Rates -- Steganalysis II -- Detecting Hidden Messages Using Higher-Order Statistics and Support Vector Machines -- Detection of LSB Steganography via Sample Pair Analysis -- Hiding Information in Unusual Content I -- Hiding Data in DNA -- Tracing the Source of a Shredded Document -- Hiding Information in Unusual Content II -- Oblivious Hashing: A Stealthy Software Integrity Verification Primitive -- Practical Oblivious Transfer Protocols.

These post-proceedings contain 27 papers that were accepted for presentation at the Fifth International Workshop on Information Hiding, held 7–9 October 2002, in Noordwijkerhout, The Netherlands. The papers were selected from 78 submissions on the basis of their scienti?c excellence and novelty by the program committee. We tried to have a balanced program covering several aspects of information hiding. The program committee was composed of Ross J. Anderson (Univ- sity of Cambridge, UK), Jan Camenisch (IBM Zurich Research Laboratory, Switzerland), Ingemar J. Cox (NEC Research Institute, USA), John McHugh (SEI/CERT, USA), Ira S. Moskowitz (Naval Research Laboratory, USA), Job Oostveen (Philips Research, The Netherlands), Andreas P?tzmann (Dresden University of Technology, Germany), Mike Reiter (Carnegie Mellon University, USA), and me. We all wish to thank all the authors of submissions for o?ering their papers for consideration. This year, contrary to the four previous workshops, the call for papers - quested anonymous submissions. However, anonymity was not compulsory and we did accept some papers in which the identity of the authors was clear. Each submission was assigned to three members of the program committee. Papers submitted by program committee members were assigned to four reviewers. The program committee relied on the advice of outside colleagues. We also insisted that 12 of the 27 accepted papers should be revised according to the comments of the reviewers.