U.S. Treasury Secretary Janet Yellen met virtually on Monday with Chinese Vice Premier He Lifeng and raised concerns about "malicious cyber activity" carried out by Chinese state-sponsored actors, the Treasury Department said in a statement.

US Treasury Secretary Janet Yellen told China’s Vice Premier He Lifeng of her “serious concern” regarding “malicious cyber activity” a week after the US said Chinese state-sponsored hackers had breached the Treasury Department’s computer networks.

Threat actors entered Treasury Department systems through BeyondTrust. The breach may be related to the Salt Typhoon attacks.

China has slammed a decision by the U.S. Treasury to sanction a Beijing-based cybersecurity company for its alleged role in multiple hacking incidents targeting critical U.S. infrastructure.

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.