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 robust ...

The app, which was introduced in 2014 and has hundreds of millions of users, is widely viewed as the safest messaging tool because of its encryption technology. By Kate Conger Reporting from San ...

LONDON — 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 ...

March 25 (Reuters) - Top Trump administration officials used messaging app Signal to share war plans and mistakenly included a journalist in the encrypted chat, spurring calls by Democratic lawmakers ...