Blizzard Entertainment’s SMS Protect program provides players with a new system that can send account notifications to their mobile devices. So, to help you with this latest debut, we’ll show you how ...

Many Web sites and apps now offer two-factor authentication (2FA), which requires you to enter a short numeric code—the so-called second factor—in addition to ...

Elon Musk disabled specific microservices at Twitter, which likely included Twitter SMS 2FA. If you used text messages to prove your identity when logging into Twitter, you wouldn’t be able to do that ...

Before it was the world's most popular messaging app, WhatsApp wasn't even a messaging app. Founder Jan Koum simply thought it would be neat to open his address book and see status messages—at the gym ...