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 ...

Messaging and social media apps, including WhatsApp, Telegram, Signal, and Instagram displayed on a smartphone screen. - Thrive Studios ID/Shutterstock The freedom that an Android phone offers also ...

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 ...