First, though, let’s start with something more basic: What is two-factor authentication? With two-factor, hackers need both your password and access to your phone or other “second factor” to break in. If you regularly log into Facebook , Gmail, banking and other accounts with just a password, you have a security hole. (Doing a Google search for “two-factor authentication” and then the website or app’s name generally directs you to the setting, or to a how-to page about it.) (This is why you need two-factor authentication turned on everywhere in the first place!)

Source: Wall Street Journal September 18, 2017 02:03 UTC