ABSTRACT
This introduction presents an overview of the key concepts covered in the subsequent chapters of this book. The book discusses the concept of "national cybersecurity", a term chosen to emphasize the continuing relevance of state actors in cyberspace. It explores the historical and conceptual overlap between cross-domain deterrence (CDD) and cybersecurity. The book also examines what constitutes an "armed attack" in cyberspace, and how—once it has attributed responsibility—the United States should respond to this type of warfare. It also explores how the specificity of cyberspace challenges traditional military thinking. The book explores the concept of innovation and its application in cyber operations. It focuses on the currencies of cyberspace: data, information, and intelligence. The book also focuses on a buzzword in the contemporary public debate on national security: "big data". It also focuses on the need for coordination between the public and private sectors. The book explores the requirements for developing and enhancing military cooperation in cyberspace.
