Global messaging app WhatsApp, which boasts over a billion users, was targeted by hackers last month in a breach that saw mobile devices attacked through the voice calling functionality of the app.

WhatsApp is expanding where and how you can add and update your contacts list, with a goal of eventually allowing you to add new contacts using a username without needing a phone number. In a Tuesday ...

Here’s how to avert the WhatsAppocalypse. WhatsApp is warning iPhone users to update the messaging service as soon as possible amid an insidious, precision cyberattack against specific individuals.

To update WhatsApp on an iPhone or iPad, launch the App Store app. Tap your profile icon in the upper right corner, and then ...