Protecting your online accounts is crucial, and a hardware security key is one of your effective defenses. These are the top security keys we've tested for keeping your information private and secure.

A hardware security key is a physical gadget—like a USB stick—that gives you an extra layer of security through multifactor authentication (MFA). When you sign in to certain services, you’ll plug it ...

Dave Lieber I was confused. Kept seeing mention of a security “key” offered on some of my favorite websites—Microsoft, Google, YouTube and Facebook, to name a few. I wasn’t sure if I should use it.

Most people assume that turning on two-factor authentication is enough to protect their accounts. It’s a big improvement. But it’s not enough. If someone can take control of your phone number, trick ...