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 ...

Open Whisper Systems, a provider of security-related technologies and apps for mobile devices, has started rolling out an Android version of its private messaging and calling iOS app Signal. In doing ...

The freedom that an Android phone offers also comes with a price, and one of the biggest is the app overload. Unlike iOS and other Apple devices, where iMessage dominates everyday conversation between ...

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 ...