A watchdog group has said the exchanges on the Signal app were federal records, and sued in an effort to preserve them.

Dan Caldwell was listed as the Pentagon's point of contact by Defense Secretary Pete Hegseth in the infamous Signal group ...

US Defence Secretary Pete Hegseth is facing a fresh legal trouble after Pentagon school students have filed a lawsuit against ...

In the age of digital communication, the fallout from the recent Signal group chat leak has captured the public's attention and prompted significant discussions about national security. This incident ...

Lawmakers and legal experts claim the Yemen Signal group chat ‘blatantly violated security regulations designed to prevent ...

President Trump suggested Wednesday that the Signal messaging platform his top national security brass used to discuss the Houthi strike may be “defective.” While defending Defense Secretary Pete ...

Federal Judge James Boasberg, the chief U.S. district judge in Washington, on March 27 ordered Ratcliffe—along with Defense Secretary Pete Hegseth, Secretary of State Marco Rubio, Treasury Secretary ...

The Trump administration’s Signal chat leak represents the "profound" risk of "uncontrolled communication," which could have implications on future operations, a former national intelligence ...

Journalist added to Signal group chat with ... While the leaked details about the planned strikes did not necessarily compromise the mission, Newton said there were broader implications of ...

Nahal Toosi is POLITICO’s senior foreign affairs correspondent. She has reported on war, genocide and political chaos in a career that has taken her around the world. Her reported column, Compass, ...