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

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

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

For weeks, UN officials have been on tenterhooks waiting to see who US President Donald Trump would appoint as his ambassador ...

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

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

Mr Waltz came under searing scrutiny in March after revelations that he added journalist Jeffrey Goldberg to a private text ...

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 ...

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

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