Identity Assurance Level (IAL)

{
  "id": "MLC-T-CYB-002028",
  "term": "Identity Assurance Level (IAL)",
  "field": "Cybersecurity",
  "definition": "1. A category that conveys the degree of confidence that a person’s claimed identity is their real identity, as defined in [NIST SP 800-63-3] in terms of three levels: IAL 1 (Some confidence), IAL 2 (High confidence), IAL 3 (Very high confidence).\n\n2. A category that conveys the degree of confidence that the subject’s claimed identity is their real identity.\n\n3. A category that conveys the degree of confidence that the applicant's claimed identity is their real identity. Note: NIST SP 800-63-3 describes three levels of assurance.\n\n4. A category that conveys the degree of confidence that the applicant’s claimed identity is their real identity.",
  "abbreviation": "IAL",
  "references": [
    "FIPS 201-3",
    "NIST SP 800-63-4; NIST SP 800-63A-4",
    "CNSSI 4009-2022 from NIST SP 800-63-3 (adapted)",
    "NIST SP 1800-17b; NIST SP 800-63-3 [Superseded]",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/identity-assurance-level-ial/"
}