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.

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 ...

The best way to secure your personal computer against prying eyes is to use a hardware security key like a YubiKey. That's what I've done for my laptop, which doesn't have a biometric login. Without ...