A hacker breached TeleMessage, a government-approved messaging app used by Trump administration officials, exposing archived ...

A messaging service used by former National Security Advisor Mike Waltz has temporarily shut down while the company ...

The unofficial version of Signal used by Donald Trump's former National Security Adviser Mike Waltz has been hacked, tech ...

A group of President Donald Trump’s cabinet members who inadvertently included the editor of the Atlantic in their Signal ...

Limits on spending have incapacitated parts of agencies as varied as the National Park Service and the Pentagon.

A new analysis of TM Signal’s source code appears to show that the app sends users’ message logs in plaintext. At least one ...

President Donald Trump is expanding his purge of federal government employees, with a wave of firings at the Consumer Product Safety Commission.

The security of U.S. government officials’ communications has come under the spotlight again after a modified Signal app used ...

TeleMessage, an Israeli company that sells an unofficial Signal message archiving tool used by some U.S. government officials ...

Waltz was ousted Thursday, several weeks after the eruption of a scandal over his creation of a Signal group to share ...

The clone, TeleMessage, was the subject of a reported hack in which the contents of some direct messages and group chats were ...

Defense Secretary Pete Hegseth will forgo his planned trip to Israel next week for a seat aboard Air Force One on President ...