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 ...

The security of U.S. government officials’ communications has come under the spotlight again after a modified Signal app used to archive data from third-party messaging apps was hacked in less than 30 ...

Mike Waltz and Signal leaks — name a more iconic duo. Just weeks after accidentally inviting a journalist into a Signal group chat about a classified military op in Yemen, the (now former) National ...

Newly ousted national security adviser Michael Waltz, who came under scrutiny for his usage of the messaging app Signal to discuss sensitive military operations, was photographed at a Cabinet meeting ...

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 ...

Defense Secretary Pete Hegseth shared details about impending U.S. airstrikes in Yemen with a private Signal group that included his wife, brother and personal attorney, according to sources familiar ...