Information Hiding : 5th International Workshop IH 2002 Noordwijkerhout The Netherlands October 7 9 2002 Revised Papers This book constitutes the thoroughly refereed post proceedings of the 5th International Workshop on Information Hiding IH 2002 held in Noordwijkerhout The Netherlands in October 2002. The 27 revised full papers presented were carefully selected during two rounds of reviewing and revision from 78 submissions. The papers are organized in topical sections on information hiding and networking anonymity fundamentals of watermarking watermarking algorithms attacks on watermarking algorithms steganography algorithms steganalysis and hiding information in unusual content