Republican U.S. Representative Don Bacon late on Monday said the FBI had warned him that his emails had been hacked by Chinese spies, with both personal and campaign messages compromised. Bacon was told the Chinese Communist Party had access to his accounts for about a month ending on June 16, he said on X, the social media platform formerly known as Twitter.

The news was first reported on Monday by the Washington Post. The hack was the result of a “vulnerability in Microsoft software", Bacon said, an apparent reference to the hacking campaign that Microsoft disclosed last month, which reportedly resulted in the theft of hundreds of thousands of emails from senior U.S. officials, including U.S. Commerce Secretary Gina Raimondo and U.S. Ambassador to China Nicholas Burns.