FAQGlobalISO/IEC 27035

ISO/IEC 27035 FAQ

ISO/IEC 27035 FAQ should help teams make a decision, assign owners, and collect evidence 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.

Author
Sorena AI
Published
May 9, 2026
Updated
May 9, 2026
FAQ modules
8

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 ISO/IEC 27035 FAQ explains how incident management should be handled in practice: what counts as an event or incident, who owns the response, what evidence should be kept, and when the record should be reviewed.

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Choose the question set you need

These focused FAQ modules break this artifact into narrower answer sets so teams can move straight to the right source-backed guidance.

Browse all FAQ items32
Focused FAQ modules
8
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FAQ module

ISO/IEC 27035 CSIRT Roles FAQ

How should teams handle CSIRT Roles under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Escalation FAQ

How should teams handle Escalation under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Event vs Incident FAQ

How should teams distinguish a security event from an information security incident under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Lessons Learned FAQ

How should teams handle Lessons Learned under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Notification Evidence FAQ

How should teams handle Notification Evidence under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Post Incident Review FAQ

How should teams handle Post Incident Review under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Retained Logs FAQ

How should teams handle Retained Logs under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
FAQ module

ISO/IEC 27035 Severity Classification FAQ

How should teams handle Severity Classification under ISO/IEC 27035? Practical answer with owners, evidence, review triggers, and external source references.

4 items
Question 1

What is ISO/IEC 27035 trying to help teams do?

For ISO/IEC 27035, the useful record is practical: decision, scope, owner, evidence, exception, review trigger, and next action.

ISO/IEC 27035 is useful when it turns broad intent into repeatable work: turn incident handling into a prepared, measurable, evidence-backed process from detection through lessons learned. The page therefore ends in ownership, evidence, and review cadence, not only a definition.

  • Answer the practical question first: what decision is required, who owns it, and what evidence proves it is current?
  • Keep the answer tied to the ISO/IEC 27035 scope instead of turning it into a generic policy statement.
  • Escalate when the record changes risk acceptance, customer commitments, regulatory duties, or certification evidence.
Question 2

What evidence should prove ISO/IEC 27035 is implemented correctly?

Evidence should be collected where the work actually happens. For ISO/IEC 27035, that usually means incident policy, incident response plan, IMT/IRT roles, severity matrix, event triage records, escalation logs, notification evidence, containment and recovery records, lessons learned, and retained logs.

A strong evidence set tells a visitor, auditor, customer, or decision owner what was decided, why it was reasonable, who approved it, and when it must be reviewed again.

  • Artifact-specific evidence: incident policy, response plan, severity matrix, triage records, escalation logs, notifications, containment and recovery notes, lessons learned, and retained logs.
  • Decision record: scope, assumption, risk or obligation, owner, approval, and date.
  • Operation record: ticket, log, review, test, contract clause, register entry, or control sample showing the process ran.
  • Review record: result, exception, corrective action, next owner, and next review date.
Recommended next step

Operationalize ISO/IEC 27035 FAQ

This page moves ISO/IEC 27035 guidance into an auditable operating loop with owners, evidence requests, decision records, and scheduled review dates.

Question 3

How should teams turn ISO/IEC 27035 into a repeatable workflow?

Build the workflow around a small number of durable checkpoints: intake, classification, owner assignment, evidence request, decision, review, and escalation. This keeps the work usable across audits, customer assurance, and operational reviews.

Avoid overfitting the workflow to one audit cycle. The same record should help during normal operations, change review, incident response, supplier review, or management review depending on the topic.

  • Intake: describe the system, service, supplier, control, incident, AI system, or process affected.
  • Classification: decide whether this is scope, risk, treatment, evidence, contract, incident, privacy, continuity, or AI governance work.
  • Escalation: route exceptions to the person or forum that can accept risk or fund remediation.
Question 4

How should teams review and improve ISO/IEC 27035 over time?

Review should happen during each incident, after exercises, after major control or threat changes, and during lessons-learned and management-review cycles. If the review changes the decision, update the register, workflow, control evidence, or contract record that downstream teams rely on.

Improvement is strongest when the same evidence supports multiple needs: certification audits, customer assurance, regulatory mapping, supplier governance, incident reviews, and management review.

  • Set a review date and a change-trigger rule.
  • Track findings until closure and connect them to corrective actions or risk acceptance.
  • Use management review to decide resourcing, risk appetite, scope changes, and evidence quality.
Primary sources

References and citations

iso.org
Referenced sections
  • Primary ISO listing for incident management principles and process.
"preparing for, detecting, reporting, assessing, and responding to incidents"
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.org
Referenced sections
  • Primary ISO listing for ICT incident response operations guidance.
"information security incident response in ICT security operations"
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ISO/IEC 27035 Compliance Guide
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