Open WhisperSystems today released Signal, a free app that brings encrypted calling to the iPhone.

Open WhisperSystems has just made available their open source Signal app for iPhone that will encrypt your voice calls so that no one can eavesdrop. It won't even cost you a single cent.

However, if you use the app as intended, there are a lot of protections built into Signal to help prevent conversations from falling into the wrong hands. What is Signal, and what makes it private?

Signal could protect your iPhone, even when you are not using it. Here's what experts discovered.

Downloading and setting up Signal The first step, of course, is to download the Signal app on your iPhone or Android device via the Apple App Store or Google Play.

Encrypted messaging app Signal now lets you transfer your account data, including your conversation history, to a new iPhone or iPad. The feature rolled out in the app’s 3.9.1 update earlier ...

Senior government officials mistakenly invited the editor in chief of the Atlantic to a group chat on the messaging app Signal, where the focus of conversation was U.S. airstrikes against rebel ...

Signal is less well known than some other competing messaging apps, such as Meta’s WhatsApp and Messenger or the iMessage app built into the iPhone.

What is Signal, and what makes it private? Unlike other popular messaging apps, Signal is operated by a non-profit called the Signal Technology Foundation rather than a for-profit tech giant like ...