IA-4(4)_identify-user-status

IA-4(4) Identify User Status

Enhancement of: IA-4

High-Level Description

Family: Identification and Authentication (IA) Framework: NIST SP 800-53 Rev 5

Characteristics that identify the status of individuals include contractors, foreign nationals, and non-organizational users. Identifying the status of individuals by these characteristics provides additional information about the people with whom organizational personnel are communicating. For example, it might be useful for a government employee to know that one of the individuals on an email message is a contractor.

What to Check

• Verify IA-4(4) Identify User Status is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for IA-4(4)
• Verify enhancement builds upon base control IA-4

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for IA-4(4) implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Remediation Guide

Control Statement

Manage individual identifiers by uniquely identifying each individual as [organization-defined].

Implementation Guidance

Characteristics that identify the status of individuals include contractors, foreign nationals, and non-organizational users. Identifying the status of individuals by these characteristics provides additional information about the people with whom organizational personnel are communicating. For example, it might be useful for a government employee to know that one of the individuals on an email message is a contractor.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - IA-4(4)
• NIST SP 800-53A Rev 5 (Assessment Procedures)
• NIST SP 800-53 Rev 5 Full Catalog

Checklist

• Control documented in SSP
• Implementation evidence collected
• Operating effectiveness validated
• Continuous monitoring in place
• Related controls (none) reviewed