NIST SP 800-53 Rev. 5 IA-8(3) — Use Of Ficam-Approved Products

What this control requires

Employing only Federal Identity, Credential, and Access Management (FICAM)-approved information system components in organization-defined systems to accept third-party credentials. This applies to public-facing systems, ensuring components meet FICAM's technical, security, privacy, and organizational maturity requirements for trusted authentication. This control supports the FICAM-Approved Authentication Solution capability within the Identification and Authentication family.

In plain English

Employing only Federal Identity, Credential, and Access Management (FICAM)-approved information system components in organization-defined systems to accept third-party credentials. In practice, this means you can prove you access management-level controls on a defined cadence.

Why it matters

SP 800-53 is the catalogue every U.S. federal authorisation (FedRAMP, FISMA, CMMC) and most regulated industries point at. A missing control surfaces as a Plan of Action & Milestones (POA&M) item that an Authorizing Official must approve before the Authority To Operate is granted or renewed.

What an auditor looks for

A 3PAO (FedRAMP) or Independent Assessor (NIST RMF) tests against NIST SP 800-53A assessment procedures. For each control they expect a documented implementation that addresses every assessment objective (Examine, Interview, Test) and an implementation summary in the System Security Plan.

Within Identification and Authentication, the assessor will trace your implementation back to the catalogue reference (Control IA-8(3)) and look for objective evidence on the latest two assessment cycles.

How to implement

1. Write a short policy stating intent, scope and named owner.
2. Encode it as a platform guardrail — SCP, Azure Policy initiative, Organisation Policy, or repository policy.
3. Wire a monitoring signal that catches drift (CSPM rule, SIEM rule, scheduled query, Workspace alert) and ticket it.
4. Review on a documented cadence and capture the review in the risk register or compliance tracker.

Operational checklist

• Access. Document the trigger, the owner and the cadence.
• Information. Document the trigger, the owner and the cadence.
• Security. Document the trigger, the owner and the cadence.
• Review. Document the trigger, the owner and the cadence.
• Authentication. Document the trigger, the owner and the cadence.
• Scope: management, information, privacy, authentication, organization, system, only, identity.

Evidence to collect

• Identity Scan. IAM / IdP exports — Entra ID, Okta, IAM Identity Center, Workspace directory — showing accounts, roles, MFA state and last sign-in.
• Vendor Risk Management. vendor_risk_management evidence

Identity analytics (Okta, SailPoint, Access Analyzer) demonstrates least-privilege. Third-party risk management evidence (assessments, contracts, due diligence) shows supplier oversight. Focus: Use Of Ficam-Approved Products.

How it maps to other frameworks

Computed from shared tags, control component and key-operation subjects — handy when you are reconciling controls across an audit.

• CIS Controls v8 6.6 — Establish and Maintain an Inventory of Authentication and Authorization Systems
• ISO/IEC 27001:2022 A.5.15 — Access control
• NIST SP 800-171 Rev. 3 3.15.2 — System Security Plan

Related controls in NIST SP 800-53 Rev. 5

• Control IA-8(2) — Acceptance Of External Authenticators
• Control IA-5(6) — Protection Of Authenticators
• Control IA-5(12) — Biometric Authentication Performance
• Control IA-5(13) — Expiration Of Cached Authenticators
• Control IA-4(1) — Prohibit Account Identifiers As Public Identifiers
• Control IA-8 — Identification And Authentication (Non-Organizational Users)

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control IA-8(3)

Topics: identity accessvendor riskidentity managementvendor managementaccess reviewprivileged access