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

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

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

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

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.

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

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 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 ...

“I do use Signal on sensitive issues but I do not use it [for classified information ... said Trump “continues to have the ...

President Donald Trump responded to questions about his national security officials using a group chat app that included a ...