When you log into an account online, you're presented with a screen that asks you to enter the code you received by text message. If you're fooled by a phisher and use two factor auth, the bad guys can't get into your account without this code, unless they also have your phone. ![]() This code is sent by text message (or email) and is only valid for a short period, usually 20 minutes. How it works: when you log into your account from a device, you need to use a special code or password to access a site. Facebook, Gmail, GoDaddy, Twitter, and are among the growing number of sites that use two factor authentication. Two-factor (or two-step) authentication is used by many sites and services to protect your accounts from hackers. ![]() I thought I wrote about this a few weeks ago, right after Microsoft introduced two-step authentication at but I can't find it, so if it's a duplicate, sorry.
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