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

The clone, TeleMessage, was the subject of a reported hack in which the contents of some direct messages and group chats were ...

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

Mike Waltz was photographed using Signal in a Cabinet meeting the day before Trump announced he was replacing him as national ...

The communications app TeleMessage, which was spotted on former US national security adviser Mike Waltz's phone, has ...

There are some hurdles former National Security Advisor Mike Waltz must clear first before the United Nations ambassador job ...

Former national security adviser Mike Waltz was photographed using a Signal-like messaging app during Wednesday’s Cabinet ...

The app Waltz was using appeared to be “TM SGNL,” a modified version of Signal that retains and archives messages to comply ...

The Trump administration ousted national security advisor Mike Waltz and other staffers with the National Security Council, ...

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 ...

An Israeli app used by then-U.S. National Security Adviser Mike Waltz to archive chats on Signal was easily hacked and his ...