![]() ![]() The problem is that 2FA often relies on SMS messages to send those one-time authentication codes. But many implementations of 2FA have a pretty big security issue. Two-factor authentication is an excellent way to prevent account takeovers and breaches. And since the device is with you, and not the bad guy, they aren’t going to be able to log into your account - even though they have your password! If you do have 2FA set up, the bad guy will still have to enter the second authentication factor: that one-time code sent to your mobile device. They can enter your password, log into your account, and do whatever they want to do.īut here’s the thing. If you don’t have 2FA enabled, that’s pretty much game over. This can happen in a number of ways: data breaches, phishing emails, keylogger or malware infections, social engineering attacks and seasonal scams. ![]() Let’s say that a bad guy manages to steal your password. You have to provide both the password and the authentication code to log in. That usually means that you will enter your password as your first authentication factor - but then you’ll also have to enter a one-time authentication code sent to your mobile device. When you use 2FA, you need to provide two authentication factors in order to log into an account, website, or service. (If you want a full intro to 2FA, listen to Checklist 139: 2FA 101.) We’ve covered the benefits of 2FA before, so what follows will only be a quick refresher. What if I’m not ready for app-based 2FA?.What if a site doesn’t let me use an authenticator app for 2FA?.Walkthrough 2: Setting up an authenticator app for 2FA on a LinkedIn account. ![]()
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