Chinese hackers accessed over 400 computers and over 3,000 unclassified files when they infiltrated the U.S. Treasury.

The US Treasury Department announced in a letter back in December that it had been the victim of a security breach, attributing it to a “China state-sponsored Advanced Persistent Threat actor.” Now we know more about the extent of the hack,

State-sponsored Chinese hackers breached U.S. Treasury Secretary Janet Yellen’s computer, accessing thousands of unclassified documents in December, anonymous sources told

In one of her last acts as Treasury Secretary, Janet Yellen says her agency will start taking “extraordinary measures,” or special accounting maneuvers intended to prevent the nation from hitting the debt ceiling,

Treasury Secretary Janet Yellen, in a letter on Friday to congressional leaders, said the Treasury would begin using extraordinary measures Jan. 21.