Burnham exchanged messages with person posing as Trump's chief of staffImage source, PA MediaByJennifer McKiernan, Political reporter and Damian Grammaticas, Political correspondentPublished17 August 2026, 09:24 BSTUpdated 23 minutes agoPrime Minister Andy Burnham exchanged messages with a person posing as the chief of staff to US President Donald Trump.Downing Street has declined to comment on the security breach, first reported by Politico.Politico reported that officials said Burnham communicated with the person claiming to be Susie Wiles "before becoming suspicious that the contact was illegitimate" and claimed only a "few messages" were exchanged.A government spokesperson said: "We do not comment on national security matters."It is understood the communication between Burnham and the person posing as Wiles was in the form of messages and there was no conversation between the two."No messages of significance" were exchanged and the texts were "quickly reported to the appropriate authorities" once they were believed to be suspicious, sources said.The BBC has previously reported an FBI probe into Wiles' phone being hacked in May last year.At that time, Wiles said her phone had been hacked after an impersonator, or impersonators, used her contacts file to message other top US officials.The impersonation was targeted at her personal phone, not government phone, but recipients included US senators, governors and top business executives.Wiles, a key Trump ally, was also among those targeted by a cyber espionage unit associated with Iran's Revolutionary Guards - a powerful branch of Iran's armed forces - in 2024.In 2024, the Foreign Office (FCDO) confirmed then-foreign secretary David Cameron had fallen victim to a hoax call with someone pretending to be former Ukrainian President Petro Poroshenko.Lord Cameron also exchanged some text messages with the impersonator pretending to be Poroshenko, who was president of Ukraine between 2014 and 2019.During his term as prime minister, Lord Cameron had multiple dealings with the Ukrainian leader, including meetings at international summits.The FCDO said it released details of the exchange publicly over fears it could be "manipulated".FBI to probe effort to impersonate top Trump adviser, sources tell CBSPublished30 May 2025Susie Wiles: Who is Trump's new chief of staff?Published8 November 2024David Cameron falls victim to hoax video callPublished7 June 2024Sign up for our Politics Essential newsletter to read top political analysis, gain insight from across the UK and stay up to speed with the big moments. It'll be delivered straight to your inbox every weekday.Related topicsAndy BurnhamUK-US relationsCyber-security