FAQGlobalISO/IEC 27001

ISO/IEC 27001 FAQ Annex A Control Ownership

How should teams assign Annex A Control Ownership under ISO/IEC 27001?

Use this FAQ as an auditable ISO/IEC 27001 control-governance checkpoint: define scope, ownership, evidence requirements, and periodic review triggers for each applicable control.

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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

Use this FAQ when deciding who owns each ISO/IEC 27001 Annex A control in practice: who is accountable, what evidence proves ownership stays current, and when ownership records should be refreshed.

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4 of 4 questions
Question 1

When does a page need an Annex A Control Owner and what does ownership mean?

Assign a named owner for each Annex A control that is included in your ISMS scope so responsibility for operation and implementation decisions remains traceable over time.

An owner should validate that the control remains aligned with scope, risk treatment choices, and business-service changes before records are finalized.

  • Define ownership in your SoA/control register at the same granularity as your control evidence (per control row).
  • Assign owner roles that match your internal model (security, infrastructure, platform, application, and shared-service ownership patterns).
  • Keep role updates explicit when teams, systems, or service boundaries move.
Citations
Question 2

What ownership evidence must be kept for one control?

Use a single control record that captures the current owner, owner history, decision context, and required evidence links.

When ownership changes, record the change event, reason, and downstream artifacts so control decisions remain auditable.

If your implementation requires additional segregation or formal review, add it in your internal control governance template.

  • Record the control identifier, scope boundary, current owner, backup owner, date of last confirmation, and review status.
  • Attach evidence links for risk treatment inputs, implementation status, test results, and open issues affecting that control.
  • Capture ownership transfer artifacts (handover notes, rationale, and approval references) when roles change.
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Question 3

Who approves ownership changes and transfer decisions?

Use at least two independent checks for ownership changes (for example owner + reviewer), with a formal approver or governance step for critical controls.

Apply this as a practical implementation rule in your governance process, not as a strict legal definition from the standard text.

Escalate ownership changes that affect critical controls, shared services, or customer commitments before finalizing records.

  • Require a documented decision path for each owner change with date, approver(s), and rationale.
  • Confirm operational scope, supplier impact, and unresolved exception status before closing a change.
  • Keep unresolved ownership conflicts in a named risk or issue queue until cleared.
Citations
Question 4

When must ownership be reviewed again?

Review ownership on fixed intervals and whenever ownership-impacting events occur (scope changes, supplier changes, incidents, and exceptions).

If scope or evidence context changes, close the prior owner state and start a new active state to avoid stale assignments.

  • Revisit after business or service boundary changes, supplier transitions, or material control-process incidents.
  • Re-run ownership checks after internal audit findings, management review actions, or approved risk exceptions that affect Annex A controls.
  • Carry unresolved ownership conflicts into management review with owner, date, and decision needed.
Citations
Primary sources

References and citations

ISO/IEC 27001:2022 standard page
iso.org
Referenced sections
  • Use this as the governing context for periodic review and management review cadence in ISMS operation.
"Information security management systems - Requirements"
ISO/IEC 27002:2022 standard page
iso.org
Referenced sections
  • Use this as practical context for ongoing control maintenance and operational review.
"Information security controls"
ISO/IEC 27005:2022 standard page
iso.org
Referenced sections
  • Use this for risk treatment and monitoring context reflected in control records.
"Guidance on managing information security risks"
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