By THOM SHANKER
WASHINGTON — The Obama administration has adopted new procedures for using the Defense Department’s vast array of cyberwarfare capabilities in case of an attack on vital computer networks inside the United States, delicately navigating historic rules that restrict military action on American soil.
The system would mirror that used when the military is called on in natural disasters like hurricanes or wildfires. A presidential order dispatches the military forces, working under the control of the Federal Emergency Management Agency.
Under the new rules, the president would approve the use of the military’s expertise in computer-network warfare, and the Department of Homeland Security would direct the work.