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

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

The encrypted messaging app Signal is receiving renewed attention after high-level members of President Donald Trump’s administration inadvertently added a journalist to a group chat discussing ...

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

If you hadn’t heard of Signal before Monday, chances are you have now. The secure messaging app, available for iPhones and Android devices, has long been popular with journalists because of its ...

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 encryption for its messaging and calling services that prevents any third-party from viewing conversation content or listening in on calls.

President Trump suggested Wednesday that the Signal messaging platform his top national security brass used to discuss the Houthi strike may be “defective.” While defending Defense Secretary ...

A magazine journalist's account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes has raised questions about how highly sensitive information is ...

Government ministers routinely use encrypted messaging apps including WhatsApp and Signal amid concerns they might be used to evade legitimate public scrutiny, state parliament has heard.