SI-6_security-and-privacy-function-verification

SI-6 Security and Privacy Function Verification

High-Level Description

Family: System and Information Integrity (SI) Framework: NIST SP 800-53 Rev 5

Transitional states for systems include system startup, restart, shutdown, and abort. System notifications include hardware indicator lights, electronic alerts to system administrators, and messages to local computer consoles. In contrast to security function verification, privacy function verification ensures that privacy functions operate as expected and are approved by the senior agency official for privacy or that privacy attributes are applied or used as expected.

What to Check

• Verify SI-6 Security and Privacy Function Verification is documented in SSP
• Validate all 4 control requirements are implemented
• Confirm control is operating effectively
• Review evidence of continuous monitoring for SI-6

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SI-6 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

Verify the correct operation of [organization-defined]; Perform the verification of the functions specified in SI-6a [organization-defined]; Alert [organization-defined] to failed security and privacy verification tests; and [organization-defined] when anomalies are discovered.

Implementation Guidance

Transitional states for systems include system startup, restart, shutdown, and abort. System notifications include hardware indicator lights, electronic alerts to system administrators, and messages to local computer consoles. In contrast to security function verification, privacy function verification ensures that privacy functions operate as expected and are approved by the senior agency official for privacy or that privacy attributes are applied or used as expected.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - SI-6
• 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 (CA-7, CM-4, CM-6, SI-7) reviewed