The book is an attempt to discuss the legal and regulatory aspects of cybersecurity. It presents a comprehensive analysis of international, regional, multilateral and national regulatory responses to cybersecurity in both developed and developing countries. It highlights the limits and challenges of these regulatory responses in the promotion of cybersecurity and explores several regulatory measures to address the highlighted challenges with a view to promoting global cybersecurity. The book suggests several regulatory measures to enhance cybersecurity and also emphasizes the need for the collective responsibility of states for global cybersecurity. Although, developments in the criminal use information communications continues to race ahead of the ability of regulatory frameworks to keep up, nevertheless, the book will be useful to policy makers, regulators, researchers, lawyers, students and any person interested in seeking an understanding of cybersecurity governance in developed and developing countries - especially in African countries.