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Hacker Breaches Government-Approved Messaging App Used by Top Trump Officials

A Signal clone messaging app apparently being used by top advisers to U.S. President Donald Trump abruptly went dark Monday following a reported hacking incident.
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TeleMessage, a government-approved encrypted messaging platform used to archive communications for federal compliance, confirmed the incident and said it temporarily suspended messaging services “out of an abundance of caution.” The Israeli technology company came under scrutiny last week after a Reuters journalist photographed then-National Security Advisor Mike Waltz using the app during a White House cabinet meeting.
The app’s usage raises new questions over whether foreign adversaries or other threat actors have accessed sensitive communications among top Trump officials, who have recently faced criticism for using potentially unsecured messaging apps like Signal. 404 Media reported hackers obtained data tied to Customs and Border Protection, a major cryptocurrency bill currently making its way through Congress and financial institutions, which said it verified parts of the breach.
The anonymous hacker accessed TeleMessage’s backend panel using stolen account credentials, telling 404 Media the breach “took about 15-20 minutes” and “wasn’t much effort at all.” The outlet also reported the incident revealed that archived communications are not end-to-end encrypted between the government-approved version of the platform and the archival system managed by the TeleMessage customer.
Cabinet officials and other federal employees can use government-approved messaging apps like TeleMessage for routine or official communications but they are strictly barred from sharing classified information on any platform not certified for classified use. Executive branch officials are also prohibited from discussing classified matters in non-secure environments, including personal phones, private email or public spaces.
The Reuters photo of Waltz’s phone revealed message threads between the former national security adviser and Vice President J.D. Vance, as well as Steve Witkoff, a White House special envoy engaged in negotiations involving Israel and Hamas, Russia and Ukraine and Iran’s nuclear program. Trump on Thursday removed Waltz from his position and announced his nomination as ambassador to the United Nations.
The White House did not immediately respond to a request for comment.
