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

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

A dozen current and former officials confirmed that the encrypted messaging app is used across various agencies — despite warnings about the app’s security vulnerabilities.

Government ministers routinely use encrypted messaging apps including WhatsApp and Signal amid concerns they might be used to ...

President Trump suggested Wednesday that the encrypted Signal messaging platform his top national security brass used to plan ...

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

A magazine journalist inadvertently added to a Signal group chat of US national security officials has highlighted concerns ...

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

Just as it did with Sweden, Signal is refusing to stay in a territory that undermines its encryption strategy, arguing that a ...

The encrypted messaging app Signal is receiving ... In a lengthy post to X, Signal addressed this issue by pushing back on the Pentagon’s use of the term “vulnerability.” ...

It’s an app that can be used for direct messaging and group chats as well as phone and video calls. Signal uses end-to-end ...