This book offers a critical analysis of cybersecurity from a legal-international point of view.Assessing the need to regulate cyberspace has triggered the re-emergence of new primary norms. This book evaluates the ability of existing international law to address the threat and use of force in cyberspace, redefining cyberwar and cyberpeace for the era of the Internet of Things. Covering critical issues such as the growing scourge of economic cyberespionage, international co-operation to fight cybercrime, the use of foreign policy instruments in cyber diplomacy, it also looks at state backed malicious cyberoperations, and the protection of human rights against State security activities. Offering a holistic examination of the ability of public international law, the book addresses the most pressing issues in global cybersecurity.Reflecting on the reforms necessary from international institutions, like the United Nations, the European Union, the Council of Europe, and NATO, in order to provide new answers to the critical issues in global cybersecurity and international law, this book will be of interest to academics, students and practitioners.