A phone app that Mike Waltz, President Donald Trump’s former national security adviser, apparently used to save his text ...

Researchers uncover security weaknesses in obscure TM SGNL app and indications that its Israeli maker was itself recently ...

The unofficial version of Signal used by Donald Trump’s former National Security Adviser Mike Waltz has been hacked, tech ...

TeleMessage, an unofficial version of Signal, has suspended services after a security breach allegedly exposed user messages.

Message contents and government official contact information were obtained during the breach, 404 Media reports.

A photo taken this week showed Mike Waltz using an app that looks like—but is not—Signal to communicate with top officials.

Mike Waltz, the national security adviser for President Donald Trump, is seen in photos using Signal during a Cabinet meeting ...

More than a month after he drew criticism for using Signal to discuss an impending military attack, Waltz was seen using what ...

An unofficial version of the Signal messaging app, reportedly used by Mike Waltz, former NSA, has been hacked. The breach, ...

Donald Trump removed Mike Waltz from his post as national security adviser — marking the first significant personnel overhaul ...

An unofficial version of Signal, TeleMessage, used by Mike Waltz, Donald Trump's former National Security Adviser, has ...

Mike Waltz speaks during a television interview at the White House on Thursday before he was removed by President Trump as national security adviser. (Alex Brandon/AP) ...