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 ...

Mike Waltz's exit from the Trump administration comes on the heels of the Signal chat scandal. Here's what happened.

The latest controversy comes as both Waltz and current Defense Secretary Pete Hegseth have made headlines for multiple Signal ...

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

President Donald Trump has nominated Mike Waltz to be the next U.S Ambassador to the United Nations just hours after firing ...

National security adviser Mike Waltz and his deputy, Alex Wong, will be leaving their posts, CBS News reported Thursday, ...

Mike Waltz faces scrutiny after a photo revealed his use of TM SGNL, a modified Signal app, raising security concerns due to ...

The images, captured by Reuters, show Mike Waltz, the former national security adviser, using the TM SGNL app, which allows ...

President Donald Trump's outgoing national security adviser Mike Waltz was photographed using Signal on his phone during ...

President Donald Trump announced that Mike Waltz had been ousted as national security advisor. He was previously caught up in ...