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

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

Even if Signal had perfect, uncrackable security, high-level White House staff using it to discuss classified information ...

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.” ...

The developer of the Signal app, used by members of the Trump administration, explained Tuesday why its app is the "gold ...

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

House Foreign Affairs Committee ranking member Gregory Meeks called the Signal breach 'the most astonishing breach of our ...

The president of Signal defended the security of the encrypted messaging app on Tuesday after a bombshell report revealed top ...

White House staffers have come under fire after allegedly using the app to discuss sensitive foreign policy plans.

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 ...

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