Signal Processing Special Issue on: Security of Data Hiding Technologies New possibilities of digital imaging and data hiding open wide prospects in modern imaging science, content management and secure communications. However, despite the obvious advantages of digital data hiding technologies and their current progress, these developments carry inherent risks such as copyright violation, unauthorized prohibited usage and distribution of digital media, secret communications and network security violations. Although the issues of robustness, visibility and capacity of digital data hiding technologies have received a lot of attention, their security aspect still remains an open and little studied problem. The security requirement is closely related to the stochastic visibility and unauthorized detection of hidden information and requires both new and careful study. New information-theoretic methods for blind stochastic detection of hidden data should be investigated. This aspect will have a great impact on robust digital watermarking, steganography, integrity control and tamper proofing (possibly even without embedded hidden data) and Internet/network security. This special issue will focus on the theory and state-of-art applications of Security of Data Hiding Technologies in digital signal processing research. Some of the research topics for submission include, but are not limited to: * Security-visibility-robustness-capacity aspects of data hiding technologies * Information-theoretic aspects of data hiding technologies * Steganalysis and unauthorized detection of hidden data * Visual and stochastic visibility of hidden data * Secure data embedding: content-adaptive watermark encoding, modulation and embedding * Steganography * Active and passive attacks against data hiding technologies * Stegoviruses and security architectures preventing distribution of hidden data and stegoviruses * Internet/network and protocol security issues * Blind classification of robust watermarking technologies * Integrity control and tamper proofing Prospective authors should submit an electronic copy of their complete manuscript to the address below, according to the following timetable: Manuscripts due: November 30, 2002 Acceptance notification: February 28, 2003 Final versions due: April 30, 2003 Guest Editors: S. Voloshynovskiy, University of Geneva, Switzerland T. Pun, University of Geneva, Switzerland J. Fridrich, SUNY Binghamton, USA F. Perez-Gonzalez, University of Vigo, Spain N. Memon, Polytechnic University, USA Manuscripts should be sent to: S. Voloshynovskiy, CUI-University of Geneva 24 rue General-Dufour, 1211 Geneva SWITZERLAND