what is multifactor authentication
Multifactor authentication (MFA) is a security system that requires more than one method of authentication from independent categories of credentials to verify the userâs identity for a login or other transaction.Download this guide to become a Web App Security superhero.ultifactor authentication technologies: Security tokens: Small hardware devices that the owner carries to authorize access to a network service. The device may be in the form of a smart card or may be embedded in an easily-carried object such as a key fob or USB drive.