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

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

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

Less than two weeks ago there was SignalGate, the Trump administration’s national security scandal that potentially ...

The national security adviser's use of the messaging app is under scrutiny after he mistakenly added a journalist to a ...

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.

In the aftermath of the Trump administration's military attack plans scandal, many are left wondering why sensitive national ...

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

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

Defense Secretary Pete Hegseth’s use of the Signal group chat with other national security officials to discuss plans for ...

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