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 ...

Senior officials in the Trump administration are under fire after inadvertently sharing secret war plans with a reporter via ...

WASHINGTON -- Minority Leader Chuck Schumer and top Senate Democrats from national security committees wrote a letter to President Donald Trump seeking more information about reports that members of ...

WASHINGTON – Defense Secretary Pete Hegseth divulged classified information in March from battlefield commanders about the U.S. attack on Houthi rebels in a chat on the commercial messaging app Signal ...

(CNN) — The Pentagon’s inspector general has received evidence that the military plans shared from Secretary of Defense Pete Hegseth’s Signal account to a group chat earlier this year were taken from ...

Trump officials mistakenly shared attack plans with a reporter on an unsecured app, breaching rules. Pentagon and military leaders emphasize operational security training to protect troops. OPSEC is ...

Defense Secretary Pete Hegseth shared details about impending U.S. airstrikes in Yemen with a private Signal group that included his wife, brother and personal attorney, according to sources familiar ...

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 ...

WhatsApp's joke about 'we see you' caused widespread concern over user privacy. Signal's sharp response highlighted the importance of true encryption in messaging apps.