The defense secretary has insisted no classified information was shared.

The March chat shared details of a planned attack on Houthi rebels in Somalia.

A magazine journalist's account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes has raised questions about how highly sensitive information is ...

After messages from Mike Waltz's leaked chat on the Signal app went massively public months ago, he was ousted as President Donald Trump's top national security adviser. Now, he's up for a new ...

The Pentagon inspector general report on Hegseth’s use of the Signal app to discuss sensitive military plans is expected to ...

Mike Waltz, Trump’s former national security adviser who was removed from his post in May following the “Signalgate” scandal, blamed the Biden administration while explaining his use of Signal, the ...

The report by the Pentagon’s inspector general said Hegseth has the ability to declassify material, and did not find that he ...

Information about the strike, inadvertently shared with a journalist, could have resulted in harm to U.S. pilots, a Pentagon inspector general found.

The inspector general finds that the defense secretary violated his department’s policies.

An inspector general report to be released on Thursday examined the defense secretary’s use of a private messaging app to discuss airstrikes in Yemen.

LAS VEGAS (FOX5) — The ACLU of Nevada is suing the state Department of Motor Vehicles, raising concerns over its alleged use of the encrypted messaging app Signal to communicate with U.S. Immigration ...

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