This Research Handbook provides a rigorous analysis of cyberwarfare, a widely misunderstood field of contemporary conflict and geopolitical competition. Gathering insights from leading scholars and practitioners, it examines the actors involved in cyberwarfare, their objectives and strategies, and scrutinises the impact of cyberwarfare in a world dependent on connectivity. The Research Handbook on Cyberwarfare interrogates cyberwarfare as a form of military intelligence statecraft that seeks to exploit digital systems for operational and strategic advantage. Chapter authors address cyberwarfare in its conceptual, historical, operational and strategic dimensions, and explore the application of international law, norms, ethics and arms control to this area of conflict. They pose crucial questions about the utility of cyberwarfare and its effects on society and citizens, establishing foundations for future research on the topic as a fact of international life. Providing rich detail in an accessible and understandable manner, this Research Handbook is a vital resource for scholars and researchers of cyber conflict, international relations, and security studies. Its practical elements will also appeal to military and intelligence practitioners, as well as those interested in how cyberwarfare can be regulated to ameliorate its effects on society.