In early December 2024, the U.S. Department of the Treasury experienced a cybersecurity breach. Though China denies involvement, the breach is attributed to a Chinese state-sponsored Advanced Persistent Threat (APT) actor.

Chinese government hackers breached the U.S. Treasury Department. Among other things, the hackers breached the office that administers economic sanctions against countries and groups of individuals. The hack also compromised the Treasury Department’s Office of Financial Research.

In a letter sent Monday and shared first with Semafor, Rep. Raja Krishnamoorthi, D-Ill., the top Democrat on the House select committee on China, raised concerns about the breach to Treasury Secretary Janet Yellen and asked for a meeting to discuss the situation by Jan. 15.

Hackers connected to China's government successfully breached several Treasury Department workstations and accessed unclassified documents, according to a letter to Congress on Monday. Why it matters: The U.

China slammed the U.S. Treasury's sanctions against cybersecurity firm Integrity Technology Group for its alleged role in hacking incidents.

On Friday, the Treasury Department imposed sanctions on Chinese company Integrity Technology by restricting its access to U.S. property and bank accounts.

China slammed the U.S. Monday for sanctioning a Beijing-based cybersecurity firm allegedly behind a botnet targeting American infrastructure, accusing Washington of “using the issue of cybersecurity to vilify and smear China.