The Treasury Department announced sanctions Friday in connection with a massive Chinese hack of American telecommunications companies and a breach of its own computer network. The sanctions target a Chinese hacker who officials say is affiliated with Beijing's Ministry of State Security and who was involved in a cyber-intrusion

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

The U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) has sanctioned Yin Kecheng, a Shanghai-based hacker for his role in the recent Treasury breach and a company associated with the Salt Typhoon threat group.