Description:The 8th International Workshop on Information Hiding was held in Alexandria, Virginia, in July 2006. This workshop drew leading experts in information security, software development, datamining, and computer sciences to present their findings and discuss the latest developments and applications in the field. This book constitutes the refereed post-proceedings of the workshop.Twenty-five full papers are presented. Each one was carefully reviewed by the editors to ensure accuracy, thoroughness, and readability.The papers are organized into topical sections covering watermarking, information hiding and networking, data hiding in unusual content, fundamentals, software protection, steganalysis, steganography, and subliminal channels.