For additional security, the resource may require more than one factor-multi-factor authentication, or two-factor authentication in cases where exactly two pieces of evidence are to be supplied. Simple authentication requires only one such piece of evidence (factor), typically a password. The resource requires the user to supply the identity by which the user is known to the resource, along with evidence of the authenticity of the user's claim to that identity. MFA protects personal data-which may include personal identification or financial assets-from being accessed by an unauthorized third party that may have been able to discover, for example, a single password.Ī third-party authenticator (TPA) app enables two-factor authentication, usually by showing a randomly generated and frequently changing code to use for authentication.Īuthentication takes place when someone tries to log into a computer resource (such as a computer network, device, or application). ![]() Multi-factor authentication ( MFA two-factor authentication, or 2FA, along with similar terms) is an electronic authentication method in which a user is granted access to a website or application only after successfully presenting two or more pieces of evidence (or factors) to an authentication mechanism. ( Learn how and when to remove this template message)
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