How 2FA works?
Two-factor authentication (2FA) is one of the types of multi-factor authentication (MFA). It strengthens user access security by enforcing the person to use two methods (or two factors) to verify his or her identity. This second factor can be something that a person knows (like a login name and password) - plus something that a person has - like an authentication app on a smartphone. A second factor required to complete authentication requests.
Two-Factor Authentication (2FA) is a great way to protect a person against phishing scams, social engineering, and brute-force attacks on passwords. It secures the login process against the attacks that exploit weak or stolen credentials.