Losing control of your online accounts after a data breach is a nightmare scenario, but hardware security keys, such as the Yubico Security Key C NFC ($29, as tested), are effective tools for keeping ...

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 ...