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

A new analysis of TM Signal’s source code appears to show that the app sends users’ message logs in plaintext. At least one ...

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

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.

US NATIONAL SECURITY advisor Mike Waltz is set to leave his position at the White House., according to US media reports.

US president Donald Trump said ­yesterday he is nominating his national security adviser Mike Waltz to serve as United ...

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

Mike Waltz was fired as national security advisor after being caught using the encrypted messaging app Signal during a ...

Donald Trump has tapped secretary of state Marco Rubio to be interim national security adviser after firing Mike Waltz and ...

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