https://csrc.nist.gov/glossary/term/Multi_Factor-Authentication https://csrc.nist.gov/glossary/term/Multi_Factor-Authenticat... > MFA > Definition(s): > Aut

https://csrc.nist.gov/glossary/term/Multi_Factor-Authentication https://csrc.nist.gov/glossary/term/Multi_Factor-Authenticat... > MFA > Definition(s): > Authentication using two or more different 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). See Authenticator. > Source(s): > NIST SP 800-53 Rev. 4 under Multifactor Authentication