Seven agencies use systems that no longer receive software updates from their vendor.

The State Department is also offering up to $10 million for tips that help track down nation-sponsored hackers who attack critical infrastructure.

Slides and a memo weren't enough to justify the proposal, the GAO said.

Congress wants details.

The president-elect faulted Trump's handling of the fallout from the cyber-espionage campaign and said he should name the culprit, which Biden said was likely Russia.

In the face of persistent cyberthreats, the White House effort to fix important U.S. security weaknesses risks coming up short, GAO says.