Many are raising questions about how highly sensitive information is being handled by national security officials. This ...

The recent national security breach involving a Signal group chat has raised concerns regarding the messaging app’s security.

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

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.

Democratic leaders of key House committees are reigniting calling for national security adviser Mike Waltz to step down.

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

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

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

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 ...

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

Four sources tell Politico they were aware of at least 20 chat groups, all four confirmed sensitive information was discussed ...