Two-factor authentication (2FA) is a secondary security step used to log into an online account. You can connect two-factor authentication to log into a banking service or social networking site. This means that after entering the username and password, the user is prompted to enter one more proof to confirm your identity. Often this is a temporary code received by SMS to the mobile phone specified during registration. Why is two-factor authentication important?
2FA is not just SMS. If passwords are the first factor, the second factor in 2FA might be:
Not everyone wants to bother with specifying additional data, so this point is often neglected. And in vain! After all, 2FA protects not only personal data, but also passwords from accounts and bank accounts.
The basic set, consisting of a login and password, cannot 100% protect an account from hacking. Moreover, according to statistics SplashData (a company that analyzes millions of leaked passwords), provided data that the most common password options are 123456 and 123456789. That is, you can guess such a combination the first time.
The second reason for the ineffectiveness of a regular password and login is the use of the same passwords everywhere. It seems that it helps to remember the password, not to write them down in separate notes. In fact, it is more efficient to set different passwords everywhere, let the system remember them, and then enter them using biometric data (for example, scanning a fingerprint or retina).