British Prime Minister Andy Burnham exchanged messages with someone posing as White House chief of staff Susie Wiles before ending the contact, according to reports cited by AP. Andy Burnham reportedly cut off contact after becoming suspicious; the White House said Susie Wiles' devices were not hacked. Politico reported, citing four unnamed officials, that Burnham believed he was messaging White House chief of staff Susie Wiles. Burnham became suspicious and stopped the communication.
A Burnham spokesperson declined to discuss what was described as a national-security matter. The White House said the incident did not involve a compromise of Wiles' devices. The White House denial narrows one possibility: officials said Wiles' devices were not hacked. It does not identify who created the false identity or how the contact information was obtained.
The State Department previously warned diplomats about AI-assisted attempts to impersonate senior U.S. officials. The FBI has warned that malicious actors misuse AI to impersonate government leaders. Impersonation can use copied writing style, synthetic voice or manipulated accounts without breaching the real official's device. The earlier Rubio and Wiles impersonation warnings provide pattern evidence, not proof that the same actor or tool was responsible. The present case remains only partly described in public.
Senior officials are attractive targets because a believable request can expose contacts, plans or privileged communications. Secure practice depends on independent callback, known-channel confirmation and institutional identity controls. The stated limit is that the content, duration and technology used in the messages were not disclosed, and AP relied on another outlet's unnamed-source reporting for the central exchange.
The next factual record for British Prime Minister Messaged an Impostor Posing as a U.S. Official will come from an official British investigation or parliamentary disclosure and technical attribution identifying the channel and impersonation method. Until those records are available, the confirmed account remains bounded by the cited reporting and the explicitly attributed statements above.