Signal is back in the headlines, but this time it's not for a security breach, but rather a high-profile example of how it's designed to work. Recent news highlighted an incident where classified ...

Former White House national security advisor Mike Waltz and other Trump officials appear to be communicating on a modified version of Signal, despite President Donald Trump discouraging use of the ...

The version of Signal that recently ousted national security adviser Mike Waltz was caught checking during a Cabinet meeting Wednesday is an unofficial edition of the app meant to archive messages, ...

The company behind the Signal clone used by at least one Trump administration official was breached earlier this month. The hacker says they got in thanks to a basic misconfiguration. Only he wasn’t ...

Former national security adviser Mike Waltz was photographed using a Signal-like messaging app during Wednesday’s Cabinet meeting, more than a month after he first came under intense scrutiny for ...

Mike Waltz, the departing national security adviser at the center of "Signalgate," is seen in new photos using the commercial messaging application during a Cabinet meeting held by President Donald ...

A photo taken by Reuters' Evelyn Hockstein during a Cabinet meeting Wednesday shows Waltz holding his phone below the table, with the encrypted-texting app open and visible. It also shows Waltz in ...