Modern society depends critically on computers that control and manage systems on which we depend in many aspects of our daily lives. While this provides conveniences of a level unimaginable just a few years ago, it also leaves us vulnerable to attacks on the computers managing these systems. In recent times the explosion in cyber attacks, including viruses, worms, and intrusions, has turned this vulnerability into a clear and visible threat. Due to the escalating number and increased sophistication of cyber attacks, it has become important to develop a broad range of techniques, which can ensure that the information infrastructure continues to operate smoothly, even in the presence of dire and continuous threats. This book brings together the latest techniques for managing cyber threats, developed by some of the world’s leading experts in the area. The book includes broad surveys on a number of topics, as well as specific techniques. It provides an excellent reference point for researchers and practitioners in the government, academic, and industrial communities who want to understand the issues and challenges in this area of growing worldwide importance. Audience This book is intended for members of the computer security research and development community interested in state-of-the-art techniques; personnel in federal organizations tasked with managing cyber threats and information leaks from computer systems; personnel at the military and intelligence agencies tasked with defensive and offensive information warfare; personnel in the commercial sector tasked with detection and prevention of fraud in their systems; and personnel running large-scale data centers, either for their organization or for others, tasked with ensuring the security, integrity, and availability of data.