From near limitless data collection to state-sponsored cyberattacks, cybersecurity affects us all. Cybersecurity addresses how individuals, companies, and governments attack and defend from each other in cyberspace, using digital devices and networks. This course addresses the wide range of legal (U.S. and international law) and policy issues associated with the rapidly evolving world of cybersecurity. Intended as an introduction to the topic, this course will begin with a brief overview of the internet and the cyber spectrum, from surveillance through destructive attacks. We will then cover the legal and policy dimensions around defensive and offensive cybersecurity. Topics include incident disclosure, data breaches, the Computer Fraud and Abuse Act, cyber espionage, election interference, and cyberattacks. No technical knowledge is needed.