NIST SP 800-171

Control 3.4.4

Analyze Security Impact of Changes

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Official Requirement

Analyze the security impact of changes prior to implementation.

What This Means in Plain English

Before making any change to your systems, you must evaluate how it could affect security. This means testing changes in a non-production environment and assessing whether they introduce new vulnerabilities or weaken existing controls.

How Petronella Implements This Control

Petronella Technology Group implements this control through:

  • Security impact analysis required as part of every change request in the change management process
  • Test/staging environments for validating changes before production deployment
  • Vulnerability scanning after significant changes using Sophos XDR
  • Security team review required for changes affecting CUI environments
  • ComplianceArmor security impact analysis template used for all change requests

Assessment Guidance

Assessors will review change requests for evidence of security impact analysis, verify that a test environment exists and is used, check that security team review is required for significant changes, and confirm that post-change vulnerability scanning occurs.

Common Implementation Gaps

  • Changes implemented without any security impact analysis
  • No test environment for validating changes
  • Security team not involved in change review
  • Impact analysis performed after implementation rather than before
  • No documented security impact analysis template or process

Cross-Framework Mapping

FrameworkMapped Controls
NIST SP 800-53CM-4
PCI DSSReq 6.4.5 - Change control procedures

Need Help Implementing 3.4.4?

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