The chat app, which is run by a nonprofit foundation, has been downloaded 220 million times. Here's what to know about Signal, including who owns it and whether it's safe to use. The messaging app ...

Signal is a secure messaging app that encrypts all communication from end to end, making all data accessible only to the sender and recipient.

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 ...

WASHINGTON ‒ Defense Secretary Pete Hegseth is facing renewed scrutiny after a new report that he shared the timing of U.S. air strikes on Houthi rebels with his wife and brother on an encrypted ...

Defense Secretary Pete Hegseth used the Signal app on a personal computer in his office that was connected to the internet on an unsecured commercial line, what's known as a "dirty line," two sources ...

The messaging app Signal is making headlines again, with the news that U.S. Defense Secretary Pete Hegseth used it for a chat with his wife, his personal lawyer and others in which he shared sensitive ...