WSJ: US investigates attempt to pose as White House Chief of Staff

US federal authorities are investigating an effort to impersonate White House Chief of Staff Susie Wiles, the Wall Street Journal reported on Thursday, citing people familiar with the matter.

The report said Wiles had told associates that some of her cellphone contacts had been hacked, allowing the impersonator to access private phone numbers.

The incident affected her personal phone, not her government phone, the report said.

The Journal reported that in recent weeks, senators, governors, top US business executives and other figures received messages and calls from a person who claimed to be Wiles, citing the people familiar with the messages.

The White House and FBI did not immediately respond to requests for comment.

The White House has struggled with information security. A hacker who breached the communications service used by former Trump national security adviser Mike Waltz earlier this month intercepted messages from a broad swathe of American officials, Reuters reported recently.

And late last year, a White House official said the US believed that an alleged sweeping Chinese cyber espionage campaign known as Salt Typhoon targeted and recorded telephone calls of "very senior" American political figures.

As Wiles is a key Trump lieutenant and a lynchpin of the White House’s operation, the content of her personal phone would be of extraordinary interest to a range of foreign intelligence agencies and other hostile actors.

Wiles has reportedly been targeted by hackers at least once before, in the final months of Trump’s 2024 presidential campaign. At the time, hackers alleged by US authorities to be acting on behalf of Iran approached journalists and a political operative with a variety of messages sent to and from Wiles, some of which were eventually published.