The Pentagon does not have a clear chain of command for responding to a massive cyber attack on domestic targets in the United States, according to the federal government’s principal watchdog.

While some Defense Department documents say that U.S. Northern Command would have primary responsibility for supporting civilian agencies in such an event, other documents suggest U.S. Cyber Command should be leading that effort, the Government Accountability Office found, according to a new report published Monday.

In the event of an attack on the nation’s electrical grid or financial system, for instance, the Defense Department would be expected to back up the U.S. Department of Homeland Security. Yet, the Pentagon has no clear rules in place for how that might play out.

“This absence has caused uncertainty about who in DoD would respond to support civil authorities in a cyber incident, and how they would coordinate and conduct such a response,” according to the GAO report. “The designation of cyber roles and responsibilities in DoD guidance is inconsistent.”

Read More- Military Times

Image courtesy of U.S. Navy