If you are or know a federal government employee, you might be newly familiar with the private messaging app Signal. It’s the hottest chat app in President Donald Trump’s Washington. Signal burst into ...

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 ...

New York (CNN) — 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 ...

With news this week of the messaging app being used to discuss war plans, we get you up to speed on what Signal should be used for—and what it shouldn’t. MIT Technology Review Explains: Let our ...