Russian Hackers Have Been in White House System for Months, Officials Say

Some believe systems may still be compromised.

The hacked system is not used for classified information, but is used by the White House advance and press office, the general counsel’s office, and officials in the budget and legislative liaison offices.

One person briefed on the hacking said the Russian invaders were difficult to detect and difficult to remove from the White House computer network, and some believe the hackers could still be hiding inside the system tonight.

“We’ve spoken to the fact that there was an event last year,” Rhodes said. “There’s always vulnerability and the fact is, that’s why we have a classified system, because there’s less risk on the classified system that is secure.”

US officials briefly referred to the White House cyberattack when they said last fall it was "connected" to the State Department hack.