Which term refers to the broader authentication approach that can require two or more different types of authentication factors (for example, something you know and something you have) rather than limiting the process to exactly two factors?
Multifactor authentication (MFA) is the umbrella term for any authentication scheme that uses at least two different factors- and potentially more- to validate a user's identity. Two-factor authentication (2FA) is simply a subset of MFA that stops at exactly two factors. By requiring multiple factor types, MFA adds a layered defense that is far stronger than single-factor methods and more flexible than approaches that mandate only two factors.
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What are examples of verification factors used in MFA?