This workshop course provides a deeper dive into the contested phenomenon of cyberwar. It introduces students to the burgeoning debates on cyberwar and cyberwarfare in two fields: security studies and international law. The goal is to enable students to analyze and contrast arguments and concepts in both fields. Questions investigated include: What is cyberwar? Does it exist? What are its characteristics? What are its strategic implications, if any? What is the legal framework governing cyberwarfare? What are permissible responses to cyberwarfare? And, how do conceptions of cyberwar differ in security studies versus international law?