CISM Incident Management Practice Question
An organization is updating its incident response plan after a lessons learned meeting. Which of the following is the primary purpose of updating the plan based on lessons learned?
⚠ Common exam trap
CISM often tests the distinction between the primary purpose of an activity and its secondary benefits — candidates pick 'regulatory compliance' or 'threat sharing' because those sound governance-oriented, but the primary purpose is always continuous improvement of response capability.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
To incorporate improvements to prevent recurrence and enhance response
The primary purpose of updating an incident response plan after a lessons learned review is to feed identified gaps, control failures, and response inefficiencies back into the plan so future incidents are prevented or handled more effectively. This closes the continuous improvement loop central to frameworks like NIST SP 800-61 and ISO 27035. The update is a corrective and preventive action, not a documentation or blame exercise.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To assign blame for failures
Why it's wrong here
Assigning blame targets individuals rather than correcting the plan's detection, escalation or containment weaknesses, so it produces no improvement in future response. It is tempting because accountability discussions feel like governance. Blame assignment would be correct only within a separate disciplinary or HR process, not plan revision.
- ✗
To share threat intelligence with ISACs
Why it's wrong here
Sharing threat intelligence with ISACs distributes indicators to external parties and does not incorporate the organisation's own lessons into its response procedures. It is tempting because information sharing is a recognised security practise. ISAC sharing would be correct when the goal is sector-wide situational awareness rather than internal plan improvement.
- ✓
To incorporate improvements to prevent recurrence and enhance response
Why this is correct
Lessons learned exists to close the gap between planned and actual response. Feeding findings back into the plan incorporates corrective improvements, reducing the likelihood of recurrence and strengthening future response capability, which is the stated primary purpose of the update.
- ✗
To document the incident for regulatory compliance
Why it's wrong here
Regulatory documentation records what occurred for external reporting; it does not feed identified gaps back into response procedures, which is what plan revision requires. It is tempting because compliance evidence is mandatory. Documenting for compliance would be correct when the objective is satisfying breach-notification or audit obligations.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISACA exam blueprint
This CISM practice question is part of Courseiva's free ISACA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISM exam.