What it means
A post-implementation security review evaluates whether delivered controls, requirements, operations, benefits, and risk outcomes remain effective after the system has entered real use.
Why it matters
Real operating conditions expose dependencies and behavior that tests cannot fully reproduce; the review verifies that security value survived deployment.
Practical focus
- Define the security outcomes, assumptions, controls, incidents, and operational evidence to examine after deployment before work is authorized or committed
- Use a scheduled review with accountable owners, production evidence, user feedback, and tracked corrective actions to make ownership, decisions, and exceptions traceable
- Review control performance, defects, incidents, adoption, benefits, residual risk, and lessons learned at planned decision points rather than only at closure
- Prepare for closing the project before production evidence reveals design or transition gaps with escalation, recovery, and communication paths
Common mistakes
- Treating informal agreement as durable approval
- Leaving security ownership outside the project decision structure
- Recording activity without recording the decision and its rationale
- Discovering closing the project before production evidence reveals design or transition gaps only after operational handoff
Certification relevance
This subject appears in or supports the following certification bodies of knowledge: