Recent incidents have highlighted the lack of consensus internationally on what defines a cyberattack, an act of war in cyberspace, or cyberterrorism. Cyberwar is typically conceptualized as state-on-state action equivalent to an armed attack or use of force in cyberspace that may trigger a military response with a proportional kinetic use of force. Cyberterrorism can be considered “the premeditated use of disruptive activities, or the threat thereof, against computers and/or networks, with the intention to cause harm or further social, ideological, religious, political or similar objectives, or to intimidate any person in furtherance of such objectives.” Cybercrime includes unauthorized network breaches and theft of intellectual property and other data; it can be financially motivated, and response is typically the jurisdiction of law enforcement agencies. Within each of these categories, different motivations as well as overlapping intent and methods of various actors can complicate response options.