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 ...

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

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

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

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

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

A little over three months into his stint as President Donald Trump's national security adviser, Mike Waltz was embroiled ... commercial messaging application Signal to discuss highly sensitive ...

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

U.S. President Donald Trump ousted his national security adviser Mike Waltz on Thursday and named Secretary of State Marco ...

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