A third top Pentagon official was placed on administrative leave Wednesday in the fallout of a major leak of sensitive U.S.

John Ullyot, the former senior Pentagon spokesperson who was sidelined last month amid growing controversies at the Defense Department, announced Wednesday he would leave this week. “I made clear to ...

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 ...

A lawsuit over the Trump administration’s infamous Houthi Signal group chat has revealed what steps departments took to ...

WASHINGTON — The Atlantic on Wednesday released the entire Signal chat among senior national security officials, showing that Defense Secretary Pete Hegseth provided the exact timings of ...

Extraordinary rendition of data, or just dropped it out of a helicopter? CIA Director John Ratcliffe's smartphone has almost ...

Signal's encryption protocol is open source, meaning anyone that it's freely available for anyone to inspect, use or modify. The encryption protocol is also used by another popular chat service ...

An image of the Signal app is shown on a mobile phone in San Francisco, March 18. LONDON — A magazine journalist's account of being added to a group chat of U.S. national security officials ...

Allies of the United States see the group chat between top U.S. officials about ... of one European diplomat about the discussion on the Signal messaging app about strikes on Houthi rebels.

The diplomat expressed hope that the Signal lapse was due to a lack of experience in government rather than a deliberate disregard for security. Asked if he had concerns about sharing intelligence ...