Was Mike Waltz using hacked app that looked like Signal?

Former U.S. National Security Adviser Mike Waltz may have used a compromised messaging app that resembled Signal, raising fresh concerns about secure communications within top levels of government.

Tech site 404 Media reported that TeleMessage—a Signal-like app allegedly used by Waltz during a cabinet meeting—was hacked by an unidentified individual. The hacker claimed to have accessed the app’s backend and intercepted user messages by exploiting a vulnerability.

While no messages from Waltz or other Trump cabinet members were reportedly compromised, the breach has intensified scrutiny over Waltz’s communications. He was ousted Thursday, weeks after it emerged he created a Signal group to share live updates on U.S. military action in Yemen. That group attracted attention when a journalist was accidentally added.


TeleMessage mimics the interface and features of Signal, an encrypted platform known for strong privacy protections. However, unlike Signal, TeleMessage is built to retain messages after decryption for compliance purposes—potentially increasing security risks if not implemented properly.

A Signal spokesperson told Reuters the company “cannot guarantee the privacy or security properties of unofficial versions of Signal.”

TeleMessage, currently being rebranded as Capture Mobile by its parent company Smarsh, has not responded to requests for comment. Reuters also could not independently verify the hacker’s claims.