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.

Treasury says hackers accessed “certain unclassified documents” in a “major” breach, but experts believe the attack’s impacts could prove to be more significant as new details emerge.

The episode comes at a particularly sensitive moment, just as the Biden White House is dealing with one of the most far-reaching, and damaging, hacks into American infrastructure in the cyberage.

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. A Treasury official told Semafor that the agency has already offered briefings to Congress.

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.