Don't let scammers get their hands on your sensitive information. Here's how to secure your online accounts—from Amazon and Google to Twitter and WhatsApp—with two-factor authentication (2FA).

But many security experts say there’s a better option: switching to an authentication app, which uses an algorithm linked to your device to continually generate numerical codes that expire every ...

What is two-factor authentication? Why do I need to set it up? What are the best apps? Bradley Chambers answers all your questions in this article.

DuoSec’s app can both generate security tokens using Google’s widely adopted protocol, as well as pass direct authentication messages with its own system.

The alternatives rely on either using a third-party app to generate a temporary code or plugging in an authorized security key for access to your account.

With Twitter planning to charge for text message security on your account, here's how to use an authentication app and be more secure in the process.

If you lose your phone or switch devices, you might get locked out of your online accounts. Here’s how to prevent that from happening.

If you wanted to lock down your Twitter account and make it harder for hackers to break in, you’d either have to turn on SMS-based two-factor authentication (2FA) or generate a one-time login code.

Follow this guide to generate passwords for apps and services connected to your Microsoft Account which don't support two-factor authentication.