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

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

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

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.

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

The news of Trump officials using Signal for a group chat on military ... president or the secretary of# defense or the national security adviser,## that their phones are targeted by# some of ...

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

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

So let me get this straight. A meeting to discuss high-level U.S. war plans was done on a private messaging APP not cleared for such high-level security discussions. Presumably, a foreign ...

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

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