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

A dozen current and former officials confirmed that the encrypted messaging app is used across various agencies — despite ...

Trump officials have been slammed for using the app to discuss highly sensitive information, including war plans.

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

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

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

Mistake.” “Glitch.” “Entirely permissible.” “Hoax.” See the varied and shifting responses President Donald Trump and his ...

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.

The White House concludes its review of the Signal chat leak, prompting calls for accountability and future security measures ...

Adding a journalist to a national security chat that included discussions about a military attack was a mistake. But let's ...