US Treasury Secretary Janet Yellen’s computer was infiltrated and unclassified files were accessed as part of a broader breach of the agency by Chinese state-sponsored hackers, according to two people familiar with the matter.

We’ve been reporting on a Chinese hacking group infiltrating the US Treasury Department and now we have more information. It looks like they breached more than 400 computers.

Treasury and law enforcement officials told US lawmakers that Chinese hackers had accessed unclassified files between September 30 and November 18, 2024, Politico reported on Thursday, citing unnamed sources.