This timely book summarizes the key statutes, regulations, and court rulings for use in undergraduate and graduate level courses in cybersecurity, cyber operations, management-oriented information technology (IT), and computer science. New material includes many expanded sections, such as the addition more recent FTC data security consent decrees, including Ashley Madison, Uber, and Lenovo. The author also added the latest developments in the LabMD case, which was discussed in the first edition. This new edition also includes an overview of the new bills introduced by lawmakers in Congress to set national standards for data breach notifications and data security. There is a new section on government agency guidance and rules for cybersecurity of connected devices, such as vehicles, medical devices, and webcams. Bitcoin and other cryptocurrency have spurred a number of cybersecurity concerns and proposals for new laws and regulations, which are addressed in this new edition. This book also explores the limits on cyber activities during an active war. In particular, this new edition examines restrictions on harm to neutral states and civilians (and civilian infrastructure), and the unique constraints that these limits place on cyber warfare.