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.

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 Secretary of the Treasury Janet Yellen on Monday met virtually with Chinese Vice Premier He Lifeng (何立峰) and raised concerns about “malicious cyber activity” carried out by Chinese state-sponsored actors,