Multi-factor authentication (MFA; encompassing Two-factor authentication or 2FA, along with similar terms) is an electronic authentication method in which a user is granted access to PRIV.DRM only after successfully presenting two pieces of evidence (or factors) to an authentication mechanism: knowledge (something only the user knows), possession (something only the user has), and inherence (something only the user is). MFA protects the user from an unknown person trying to access PRIV.DRM data .
A third-party authenticator (TPA) app enables two-factor authentication, showing a randomly-generated and constantly refreshing code to use for authentication.