Learn more about Signal, including whether the news about its use in a military intelligence breach impacts its effectiveness ...

The so-called vulnerabilities mentioned regarding Signal are not with the app or its security. Instead, the issues are related to what is always the weakest link with any digital communications ...

Democratic leaders of key House committees are reigniting calling for National Security Advisor Mike Waltz to step down.

Secure messaging app Signal has been in the spotlight this week for national-security reasons, but companies can also learn lessons from the Trump administration’s misstep.

Defenese Secretary Pete Hegseth, national security adviser Mike Waltz and more of the contacts who appeared in the Signal ...

Did Defense Secretary Pete Hegseth’s messages detailing planned U.S. airstrikes in Yemen constitute a classified war plan?

This follows Monday’s reports that a magazine journalist was added to a group chat of national security officials talking about war plans. ‘Signal,’ the app used for the group chat ...

The White House’s assertion that the case is closed surrounding national security officials’ use of Signal is getting ...

and legal issues. But the security of Signal itself is not one of them. Despite that, in the wake of The Atlantic’s story on Monday, some have sought tenuous connections between the Trump ...

The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the ...

LITTLE ROCK (KATV) — Retired Army Colonel Marcus Jones, with a background in national security, shared his insights on the recent signal leak that has stirred public concern. "The only way it ...

President Trump was urged by far-right activist Laura Loomer to purge staffers she deemed insufficiently committed to his ...