The Handbook of Information and Communication Security covers some of the latest advances in fundamentals, cryptography, intrusion detection, access control, networking (including extensive sections on optics and wireless systems), software, forensics, and legal issues. The editors’ intention, with respect to the presentation and sequencing of the chapters, was to create a reasonably natural flow between the various sub-topics. This handbook will be useful to researchers and graduate students in academia, as well as being an invaluable resource for university instructors who are searching for new material to cover in their security courses. In addition, the topics in this volume are highly relevant to the real world practice of information security, which should make this book a valuable resource for working IT professionals. This handbook will be a valuable resource for a diverse audience for many years to come.