Two factor authentication

Also knows as 2FAShort for two-factor authentication. 2FA is an important sec... More. The second layer of security added during the login process to protect an online accountAn account that is accessed through a webpage. Online accoun.... When two-factor authentication is activated, the user logs in with a username and passwordA 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.