“Cyberattacks can amount to armed attacks triggering the right of self-defense and are subject to international laws of war, the State Department’s top lawyer said Tuesday.
Spelling out the U.S. government’s position on the rules governing cyberwarfare, Harold Koh, the department’s legal adviser, said a cyber-operation that results in death, injury or significant destruction would probably be seen as a use of force in violation of international law.”
Source: Cyberattacks could trigger self-defense rule, U.S. official says – The Washington Post