This advertisement has not loaded yet, but your article continues below. BUENOS AIRES, Argentina — A doctor testified Tuesday at the trial of seven medical professionals accused of negligence in ...

WASHINGTON (AP) — The top Republican and Democrat on the Senate Armed Services Committee requested an investigation Thursday into how Trump national security officials used the Signal app to ...

He said the top national security officials involved in Signal debacle were remarkably reckless. Edgar said there was no doubt the conversation they had over the app was classified. This as-told ...

The Atlantic released the entire Signal chat among Trump senior national security officials Wednesday, showing that Defense Secretary Pete Hegseth provided the exact times of warplane launches ...

Serious national security concerns have been brought to the forefront this week — and they’re linked to a secure messaging app called Signal. White House staffers have come under fire after ...

It's Wednesday, March 26th. I'm Victoria Craig for the Wall Street Journal. Signal is the app for spies, journalists, and apparently senior White House officials. What is it? And is your data safe ...

Jacob Adams is a journalism fellow at The Daily Signal. Send an email to Jacob. On heels of the testimony of several leaders of the U.S. intelligence agencies, The Atlantic released additional ...

WASHINGTON — Director of National Intelligence Tulsi Gabbard said Wednesday it was a “mistake” for national security officials to discuss sensitive military plans on a group text chain that ...

WASHINGTON (AP) — 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 ...

Encryption on Signal is turned on by default, unlike another popular messaging app, Telegram, which requires users to turn it on and does not make it available for group chats. Signal has features ...