This companion provides the most comprehensive and up-to-date comparative overview of the cyber-security strategies and doctrines of the major states and actors in Europe, North America, South America, Africaand Asia. The volume offers an introduction to each nation’s cybersecurity strategy and policy, along with a list of resources in English that may be consulted for those wishing to go into greater depth. Each chapter is written by a leading academic or policy specialist, and contain the following sections: overview of national cybersecurity strategy; concepts and definitions; exploration of cybersecurity issues as they relate to international law and governance; critical examinations of cyber partners at home and abroad; legislative developments and processes; dimensions of cybercrime and cyberterrorism; implications of cybersecurity policies and strategies. This handbook will be of much interest to students and practitioners in the fields of cyber-security, national security, strategic studies, foreign policy and International Relations.