LONDON — British Prime Minister Andy Burnham exchanged messages with an impostor posing as US President Donald Trump's chief of staff, according to reports published Monday.
A spokesperson for Burnham declined to comment, saying it was policy not to discuss "national security matters".
Politico cited four unnamed officials in first reporting that Burnham thought he was messaging with Susie Wiles before he became suspicious and cut off communications.
The White House said the incident had nothing to do with Wiles' devices being hacked.
Last year, the US government investigated a series of messages that elected officials, business executives and other prominent figures in the US received messages from someone posing as Wiles.
Soon after those incidents, the State Department warned US diplomats of attempts to impersonate Secretary of State Marco Rubio and possibly other officials using artificial intelligence.
The warning followed the discovery that an impostor posing as Rubio had attempted to reach out to at least three foreign ministers, a US senator and a governor.
The FBI had warned of "malicious actors" misusing AI to impersonate senior US government officials.
Burnham, who became prime minister less than a month ago, has tried to forge good ties with the White House. Trump initially warmed to Burnham's predecessor, Keir Starmer, before souring on him.
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