The US Treasury says a Chinese state-backed actor stole their computers.

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The Chinese state-backed actor hacked the U.S. Treasury Department through a third-party service provider in a “major cybersecurity issue,” the agency said Monday.

In a letter to the Senate Banking Committee seen by the Financial Times, the Treasury Department said on Dec. 8 that a hacker obtained a security key from software company BeyondTrust that breached several remote government offices and in turn gained access. Documents not assigned to them.

“Based on available indicators, the incident is an Advanced Persistent Threat (APT) actor supported by the Chinese government,” the letter said. “In accordance with Treasury policy, attacks by APT are considered a major cybersecurity risk.”

The department said it was working with the FBI and other intelligence community investigators to determine the impact of the hack. “Currently, there is no evidence that a threat actor continues to access Treasury data,” he added.

A Treasury spokesman said in a statement on Monday that the agency “takes seriously all risks to our systems and the information they contain.”

“We will continue to work with both private and public sector partners to protect our financial system from threat actors,” the person added.

The Chinese Embassy in Washington did not immediately respond to a request for comment.

The breach is the latest cyber security breach involving US targets allegedly carried out on behalf of China.

He said the Biden administration said in October. Investigate The FBI and the Cybersecurity and Infrastructure Security Agency said it involved “unauthorized access to commercial telecommunications infrastructure by actors associated with the People’s Republic of China.” Hackers have reportedly targeted the phones of President-elect Donald Trump and running mate JD Vance ahead of the US election.

Referring to the level of stress, the business unit in September He took steps Vehicles with built-in Internet connectivity lift restrictions on Chinese software and hardware to limit China’s access to Americans’ information.