Alexander: Another solution to prevent Facebook hack is an authenticator app An authenticator app is different from two-step authentication. Here's how.

Want to avoid having your online accounts hacked? Enable two-factor authentication (2FA), a crucial security measure that requires an extra code when signing in from an unfamiliar device. In this ...

Earlier this year Facebook came under fire for spamming users with two-factor authentication codes. The social network said that was a bug.

If your Microsoft Authenticator app is not working or displaying code for the accounts, then follow the suggestions to fix the issue using multiple methods.

In case Tofu Authenticator cannot be used due to loss of smartphone etc., click 'Download backup code' and then click '×'. This completes the setting of the one-time password.