Chinese hackers remotely accessed several U.S. Treasury Department workstations and unclassified documents after compromising a third-party software service provider, the agency said Monday. The department did not provide details on how many workstations had been accessed or what sort of documents the hackers may have obtained,

Chinese state-sponsored hackers infiltrated the U.S. Treasury Department by exploiting a vulnerability in third-party software provider BeyondTrust, granting them remote access to several workstations and unclassified documents.

Chinese state-sponsored hackers breached the Treasury Department's computer security guardrails this month, according to a letter to lawmakers that Treasury officials provided to Reuters.