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 ...

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.

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.