2FA

{
  "id": "MLC-T-CYB-000009",
  "term": "2FA",
  "field": "Cybersecurity",
  "definition": "1. Authentication using two or more factors to achieve authentication. Factors include: (i) something you know (e.g., password/personal identification number [PIN]); (ii) something you have (e.g., cryptographic identification device, token); or (iii) something you are (e.g., biometric).\n\n2. View of an object that focuses on the information relevant to a particular purpose and ignores the remainder of the information.\n\n3. An authentication system that requires more than one distinct authentication factor for successful authentication. Multifactor authentication can be performed using a multifactor authenticator or by a combination of authenticators that provide different factors. The three authentication factors are something you know, something you have, and something you are.\n\n4. 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.",
  "expansions": [
    "abstraction",
    "Multifactor Authentication",
    "Two-Factor Authentication"
  ],
  "references": [
    "NIST SP 1800-27B; NIST SP 1800-27C from CNSSI 4009-2015",
    "NIST SP 800-160v1r1 from ISO/IEC/IEEE 24765:2017",
    "NIST SP 1800-17b; NIST SP 1800-17c",
    "NIST SP 800-53 Rev. 4 [Superseded]",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/2fa/"
}