DENVER — The Denver mayor's office is facing scrutiny over its use of Signal, an encrypted messaging app with auto-delete capabilities, raising questions about transparency in government ...

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 ...

TeleMessage, an instant communications app used by some US Government officials, has reportedly been hacked, with private messages stolen. A report from 404 Media says a hacker broke into, and stole ...

A security breach in an unofficial version of the encrypted messaging app Signal has raised concerns about the vulnerability of communications within the highest levels of the US government, according ...

The messaging app used by at least one top Trump administration official has suspended its services following reports of hackers stealing data from the app. Smarsh, TeleMessage’s parent company, says ...

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 ...

A significant cyberattack breached TeleMessage, a communications app (a Signal fork) used by numerous US government officials, including White House staff, Secret Service, and diplomatic personnel.

A few weeks ago we witnessed an incident where military leaders inadvertently included a reporter in what was supposed to be a closed, secure communication channel, all due to the use of the Signal ...

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 ...

After messages from Mike Waltz's leaked chat on the Signal app went massively public months ago, he was ousted as President Donald Trump's top national security adviser. Now, he's up for a new ...

Ex-provost Chris Clemens sued UNC over Signal app use for board discussions. Screenshots suggest Clemens also used Signal with auto-delete for UNC business. Lawsuit argues auto-deleting messages on ...

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 ...