US Treasury claims Cyber Breach by China

The U.S. Department of the Treasury informed Congress in a letter that a China-backed hacker infiltrated its computer systems and stole some non-classified documents. The breach, described as a “major incident,” occurred in early December this year.

According to reports from The New York Times and Reuters, who reviewed a copy of the letter, a China-linked actor managed to access non-classified information from the computers of several Treasury Department employees.

The letter...