| Multifactor authentication is defined as using two or more factors to achieve authentication.
Factors include:
(i) something you know (e.g., password/PIN);
(ii) something you have (e.g., cryptographic identification device, token); or
(iii) something you are (e.g., biometric).
A privileged account is defined as an information system account with authorizations of a privileged user.
When one of the authentication factors is provided by a device separate from the system that is gaining access, this is referred to as Out of Band 2 Factor Authentication (OOB2FA). OOB2FA employs separate communication channels at least one of which is independently maintained and trusted to authenticate an end user. One channel could be a mobile device that is registered to the user. Upon a logon attempt, the system sends instructions to the device in the form of on-screen prompts instructing the user how to complete the login process. |
