Also knows as Short for two-factor authentication. 2FA is an important sec... More. The second layer of security added during the login process to protect an An account that is accessed through a webpage. Online accoun.... When two-factor authentication is activated, the user logs in with a and A series of characters (numbers, letters, and symbols) used ... and then provides the second factor of authentication. Security experts agree that 2FA should be used when possible on accounts that contain any personally identifiable information.
Two factor authentication