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IA-2(5) IA · Identification and Authentication

Individual Authentication with Group Authentication

LOW MODERATE ✓ HIGH
1 Overlay 0 Related Controls
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Requirements NIST SOURCE

When shared accounts or authenticators are employed, require users to be individually authenticated before granting access to the shared accounts or resources.

Discussion (NIST Supplemental Guidance)

Individual authentication prior to shared group authentication mitigates the risk of using group accounts or authenticators.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for IA-2(5) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. users are required to be individually authenticated before granting access to the shared accounts or resources when shared accounts or authenticators are employed.

Examine

[SELECT FROM: Identification and authentication policy; system security plan; procedures addressing user identification and authentication; system design documentation; system configuration settings and associated documentation; system audit records; list of system accounts; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with system operations responsibilities; organizational personnel with account management responsibilities; organizational personnel with information security responsibilities; system/network administrators; system developers].

Test

[SELECT FROM: Mechanisms supporting and/or implementing an authentication capability for group accounts].

Overlays

Showing the OT/ICS overlay for the parent control IA-2 — see the IA-2(5) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (8) (12)

MODERATE

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (8) (12)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (5) (8) (12)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for IA-2(5). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Identification and authentication policy
  • system security plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Mechanisms supporting and/or implementing an authentication capability for group accounts

Other Records

  • procedures addressing user identification and authentication
  • system audit records
  • list of system accounts
  • other relevant documents or records