Steganography and steganalysis
Abstract: Steganography is the art and science of hiding information in inconspicuous cover data such that the mere existence of a secret message is kept confidential. Steganalysis refers to the task of detecting secret messages in covers. This lecture introduces security notions and design principles of steganographic systems. It sets out with a discussion on the relation between subfields of multimedia security. The lecture then presents several iterations of the cat-and-mouse game between defenders and attackers for the case of (grayscale) images as covers. Special emphasis is set on the problem of selecting embedding positions with the help of coding theory and game theory. The lecture will close with an outlook pointing to recent instances of steganography problems in general systems security.
Bio: Rainer Böhme is Professor for Security and Privacy at the Department of Computer Science, University of Innsbruck, Austria. Prior to that he was Assistant Professor of Information Systems and IT Security at the University of Münster in Germany and Postdoctoral Fellow at the International Computer Science Institute in Berkeley, California. His research interests include multimedia security, digital forensics, privacy-enhancing technologies, as well as economics of information security and privacy and virtual currencies. He holds a Master’s degree in Communication Science and Economics and a Doctorate in Computer Science, both from TU Dresden in Germany. Rainer Böhme served this community as Program Co-chair of the Information Hiding Conference 2012, General Co-chair of the ACM Workshop on Information Hiding & Multimedia Security 2018, and Associate Editor of IEEE T-IFS since 2017.