A public watchdog group has launched the first lawsuit over the Trump administration’s use of Signal to discuss war plans, ...

Defense Secretary Pete Hegseth on Tuesday fended off a reporter’s questions about a leaked Signal chat group about forthcoming strikes on the Houthis in Yemen.

Hegseth’s defiance was typical of the bombast that Trump spotted when he was a Fox News anchor and vehement defender of the president in his first term and that made him defense secretary, despite his ...

Years before their Signal chat about Houthi war plans, top Trump aides said security breaches are a firing -- and ...

A high-profile data leak sheds light on a privacy app popular among journalists and Beltway types. Is it safe?

The Pentagon's intelligence and law enforcement arms are investigating what it says are leaks of national security information. Defense Department personnel could face polygraphs in the latest such ...

On Wednesday morning, The Atlantic published the Signal messages that editor in chief Jeffrey Goldberg received from the most senior national security officials of the U.S. about military strikes ...

Hegseth was right that Clinton's carelessness seemed to fit ... As investigations by the State Department's inspector general and the FBI later showed, none of that was true. Clinton did not comply ...

called for national security advisor Mike Waltz and Secretary of Defense Pete Hegseth to resign Tuesday ... CIA Director John Ratcliffe and FBI Director Kash Patel appeared alongside Gabbard ...

The lack of public contrition, let alone resignations, from top officials, reflects a White House that operates in a culture ...

The attempts by Trump and some of his administration’s top leaders to downplay a security breach stand in stark contrast to ...