Signal is a messaging app that uses end-to-end encryption to keep your messages private — not even the company that makes the ...

WhatsApp uses Signal's encryption protocol, so your chats and calls are just as end-to-end encrypted as those on Signal. But ...

A messaging app called Signal was recently the preferred communications platform for top officials in the Trump administration to discuss war plans.

Top Trump administration officials used messaging app Signal to share war plans and mistakenly included a journalist in the ...

A magazine journalist’s account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes has raised questions about how highly sensitive information is ...

A high-profile data leak sheds light on a privacy app popular among journalists and Beltway types. Is it safe?

A Pentagon-wide advisory that went out one week ago warned against using Signal, the messaging app, even for unclassified ...

Signal is a free app that cybersecurity experts consider to be one of the most secure messaging services because of its ...

Dan Caldwell, a senior adviser to Defense Secretary Pete Hegseth, has been placed on administrative leave for an ...

The National Security Agency sent a bulletin in February warning of Russian hackers trying to access encrypted conversations on Signal.

The Pentagon’s acting inspector general has announced that he will review Defense Secretary Pete Hegseth’s use of the Signal ...