Marines with Marine Corps Forces Cyberspace Command in the cyber operations center in Lasswell Hall at Fort Meade, Md., Feb. 5, 2020. DOD Who’s hacking the U.S.? It’s not an easy question to answer, defense leaders told lawmakers, as determining if a malicious cyber attacker is a foreign government, a cyber criminal or a cyber criminal supported by a foreign government is never clear. “The line between nation-state and criminal actors is increasingly blurry as nation-states turn to criminal proxies as a tool of state power, then turn a blind eye to the cyber crime perpetrated by the same malicious actors,” said Mieke Eoyang, the deputy assistant secretary of defense for cyber policy, during a hearing today before the House Armed Services Committee.