“The first edition of this book was a masterfully comprehensive, penetrating, and deeply informative introduction to all dimensions of cyber conflict, which has rapidly emerged as the dominant strategic arena of the 21st century. This new edition not only updates but improves the book's achievements.” –Richard K. Betts, Columbia University, author of Enemies of Intelligence and American Force

“Cyber is arguably the most complicated as well as the most important arena of conflict the U.S. faces today, and the second edition of Martin Libicki’s Cyberspace in Peace and War is an indispensable guide to it, separating the hype from the real threats and choices. Updated from the first edition, it tells us where we are and where we are likely to go.” —Robert Jervis, author of How Statesmen Think: The Psychology of International Politics

“Libicki's updated master class on the foundations, implications and import of cyberspace delivers the breadth of an encyclopedia and the accessibility of a personal guide within a context of forward-looking strategy. Covering technology, human factors and doctrine in equal measure, Libicki delivers a book that the reader can employ as a ready reference to assist in navigating the complex landscape of strategy and policy for a domain on which all others depend.” —Chris Inglis, former deputy director, National Security Agency

“Cyberspace in Peace and War, Second Edition by Martin C. Libicki, delivers a comprehensive review and analysis of the threats in cyberspace as well as thought provoking and insightful discussion of cybersecurity strategy. Presented in textbook format, Libicki’s primer is a highly valuable resource, especially for national security professionals and academics.” —The Cipher Brief

“Cyberspace in Peace and War, Second Edition is a massive treasure trove of fundamental knowledge and insights into one of the most challenging strategic issues confronting the United States today. The four sections of the book cover Foundations, Operations, Strategies and Norms. A cybersecurity novice reading this book will emerge from the experience with basic knowledge of virtually all the strategic and operational aspects of cyberwar and cyber defense. An experienced policymaker will have his or her sense of the topic honed and enriched by this book.” —Journal of Cyber Policy

“Cyberspace in Peace and War is a timely book. Those with an interest in defense policy and the strategy and tactics of modern warfare will benefit from the ideas Dr. Libicki presents.” —Armchair General

“The cyber realm has already seen the first attacks of a new type of warfare, one that many do not understand. This updated work delves into the history and tactics of cyber warfare.” —Military Heritage

"Cyberspace in Peace and War is a complex read but very informative of the virtual world that impacts us all." — Intelligencer