FAQGlobalISO/IEC 27035

ISO/IEC 27035 FAQ Post Incident Review

How should teams handle Post Incident Review under ISO/IEC 27035 Information Security Incident Management?

Grounded in external ISO, NIST, EU, or framework sources where relevant. This is practical implementation guidance, supporting implementation planning and should be validated against jurisdiction-specific legal, contractual, and policy requirements before implementation.

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Author
Sorena AI
Published
May 9, 2026
Updated
May 9, 2026
Questions
4

Structured answer sets in this page tree.

Primary sources
3

Cited legal and guidance references.

Publication metadata
Sorena AI
Published May 9, 2026
Updated May 9, 2026
Overview

This FAQ for Post Incident Review defines trigger and scope, accountable owner, evidence requirements, and review timing.

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4 of 4 questions
Question 1

How should teams handle Post Incident Review under ISO/IEC 27035?

Start with the operational decision: define what Post Incident Review means in your ISO/IEC 27035 scope, who owns it, and what record proves the decision is current.

For incident work, decide the timer and escalation path before an event occurs: classification, severity, legal-notification review, containment owner, communications owner, recovery owner, and evidence custodian. This keeps the answer useful in audits, customer reviews, incidents, supplier reviews, and management review.

  • Name the accountable owner and reviewer for Post Incident Review.
  • Record the scope, assumptions, decision, approval date, evidence location, exception status, and next review trigger.
  • Escalate when Post Incident Review changes risk acceptance, service commitments, customer promises, regulatory duties, or certification evidence.
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Question 2

What evidence should prove Post Incident Review is current under ISO/IEC 27035?

The evidence should show the process operating. For this artifact, the strongest record usually includes incident policy, response plan, severity matrix, triage records, escalation logs, notifications, containment and recovery notes, lessons learned, and retained logs.

Avoid evidence that only repeats a requirement. A reviewer should be able to see the actual owner, date, system, supplier, AI system, service, incident, risk, or control sample behind the answer.

  • Use source records from the system of work, not screenshots created only for audit day.
  • Keep exceptions visible as risk acceptance, corrective action, or management-review input.
  • Update linked registers when the answer changes an owner, risk, control, service, supplier, or review date.
Citations
Question 3

Who should approve Post Incident Review decisions under ISO/IEC 27035?

The person who can fund, operate, and correct the process should own the decision; governance should review consistency and exceptions.

For high-impact changes, approval should include the teams affected by the evidence: security, privacy, resilience, supplier management, AI governance, legal, risk, or business service owners as relevant.

  • Use a named owner, named backup, and named escalation forum.
  • Separate preparation work from risk acceptance and final approval.
  • Keep approval records with the evidence rather than in disconnected email threads.
Citations
Question 4

When should Post Incident Review be reviewed under ISO/IEC 27035?

Review it at planned intervals and whenever the underlying scope, service, supplier, control, risk, AI system, personal data flow, incident process, or customer commitment changes.

A stale record is worse than a short record. If the facts change, update the evidence and mark what changed so the next reviewer can trust the page.

  • Set a planned review date and a change-trigger rule.
  • Use findings to update controls, procedures, contracts, risk registers, or training.
  • Carry unresolved items into management review or risk acceptance.
Citations
Primary sources

References and citations

ISO/IEC 27035-1:2023 standard page
iso.org
Referenced sections
  • Primary ISO listing for incident management principles and process.
"preparing for, detecting, reporting, assessing, and responding to incidents"
ISO/IEC 27035-2:2023 standard page
iso.org
Referenced sections
  • Primary ISO listing for planning, preparing, and lessons-learned guidance.
"plan and prepare for incident response and to learn lessons"
ISO/IEC 27035-3:2020 standard page
iso.org
Referenced sections
  • Primary ISO listing for ICT incident response operations guidance.
"information security incident response in ICT security operations"
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