Authentication is the process of verifying the identity or other attributes of an entity (user, process, or device). Entering in log in credentials to gain access to a website is an example of authentication, whereas using a fingerprint to gain access to a building or cell phone is another example of authentication; otherwise known as biometric authentication.

Related Term: Authenticate, Biometric Authentication

Training Video: Two-Factor AuthenticationAuthenticityIdentity and Access Management, Password

Source: CNSSI 4009, NIST SP 800-21, NISTIR 7298

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