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FAQGlobalISO/IEC 27001

ISO/IEC 27001 FAQ Annex A Control Ownership

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

ISO/IEC 27001 does not prescribe a universal '' role. Assign one internally so operation, evidence, escalation, and review remain traceable.

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Author
Sorena AI
Published
May 9, 2026
Updated
Oct 15, 2026
5 sections3 primary sources
Overview

Assign a named internal owner for each so someone coordinates its implementation, operation, evidence, and review. This is a practical governance choice, not a job title required by ISO/IEC 27001. Link the assignment to the or another controlled record, and keep it separate from the standard's explicit requirement to identify risk owners and obtain their approval of the treatment plan and acceptance of residual information security risks.

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5 of 5 questions
Question 1

Does ISO/IEC 27001 require an Annex A control owner?

ISO/IEC 27001 requires the organization to assign relevant ISMS responsibilities and authorities, but it does not require a role with the exact title 'Annex A ' or one owner for every Annex A row. The organization determines the controls necessary for risk treatment; some may come from outside Annex A.

A named is still useful. Define that person's authority and duties, such as coordinating implementation, confirming operating evidence, reporting failures, and proposing changes. The remains responsible for approving the treatment plan and accepting residual information security risk.

  • Assign ownership at a level that matches how the control operates; one enterprise owner may govern a shared control while local operators perform it.
  • Record accountable owner, operators, evidence producer, reviewer, escalation route, and relevant scope.
  • Include necessary controls designed by the organization or drawn from other sources, not only the Annex A reference controls.
  • Example: one identity-governance owner can define access-review criteria across the scoped organization while application owners perform reviews and retain their own approvals. The record should show both the shared accountability and each operating handoff.
Question 2

What should a control-ownership record contain?

ISO/IEC 27001 does not mandate a control-owner register or a fixed set of fields. Use the , a control register, or another controlled record that lets people find the current responsibility and evidence without creating conflicting sources of truth.

For each , connect the owner to the control's purpose, scope, implementation status, operating process, evidence, dependencies, open issues, and relevant risk-treatment records. If several teams operate the control, name the accountable owner and each operational handoff.

  • Record the control identifier, accountable role, operators, scope, evidence location, review date, and escalation path.
  • Link implementation status and evidence to the SoA without implying that the SoA itself must contain every ownership field.
  • Record handover, unresolved issues, access changes, and the effective date when responsibility moves.
  • For a supplier-operated control, name the internal owner who governs the requirement and evidence, the supplier activity, the contract or service record, and the internal response when the supplier misses the control.
Question 3

Who approves ownership changes and transfer decisions?

ISO/IEC 27001 does not require two approvers or prescribe who approves a control-owner change. Define approval authority in the organization's ISMS roles and change process, proportionate to the control's scope and risk.

A routine personnel change may need only the process owner to update the record. A transfer that changes control design, treatment, scope, a supplier dependency, or residual risk also needs the relevant risk and governance decisions updated.

  • Record the effective date, old and new owners, affected scope, handover status, and approving authority required by the internal process.
  • 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.
Question 4

When must ownership be reviewed again?

Review ownership at the organization's planned interval and when a change affects the assignment or control. ISO/IEC 27001 does not set a universal review frequency for control-owner records.

Useful triggers include reorganizations, role departures, scope or architecture changes, supplier transitions, control failures, audit findings, incidents, and changes to risk treatment. Preserve enough history to show when each assignment applied.

  • 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.
Recommended next step

Track control ownership

Connect each necessary control to its accountable owner, operators, evidence, escalation route, handoffs, and review date.

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Question 5

Questions and answers

Does ISO/IEC 27001 require one for every Annex A control?

No. ISO/IEC 27001:2022 requires relevant ISMS responsibilities and authorities to be assigned and communicated, but it does not prescribe a role called or require a one-to-one owner for each Annex A entry. The organization can assign one owner across related controls, use a shared-service owner with local operators, or use another model, provided responsibilities, authority, evidence, and escalation remain clear.

Can a also be the ?

Yes, if the organization's role design gives that person both responsibilities and enough authority, but the two accountabilities remain distinct. The coordinates control operation and evidence. ISO/IEC 27001 requires the identified to approve the risk-treatment plan and accept the residual information security risk.

Who owns a control performed by a cloud or other supplier?

The supplier may perform the activity, but the organization should retain an internal owner for the scoped requirement, supplier governance, evidence review, exceptions, and response. Record what the supplier performs, what the organization performs, the evidence each party produces, and the action required when the service or assurance report shows a gap.

Primary sources

References and citations

ISO/IEC 27002:2022 standard page
iso.org5 citations
Referenced sections
  • ISO/IEC 27002 is the primary control implementation guidance companion for ISO/IEC 27001.
  • ISO/IEC 27002:2022 provides implementation guidance for the information security controls referenced by ISO/IEC 27001 Annex A.
  • ISO/IEC 27002:2022 supplies control guidance that organizations can use to define operating responsibilities and suitable evidence.
Show 2 more
  • ISO/IEC 27002:2022 provides control guidance that can inform organization-specific ownership and operational roles.
  • ISO/IEC 27002:2022 provides guidance for maintaining and reviewing information security controls.
"Information security controls"
ISO/IEC 27001:2022 standard page
iso.org4 citations
Referenced sections
  • ISO public listing for the ISMS requirements standard. The role and risk-owner requirements summarized here come from ISO/IEC 27001:2022 clauses 5.3, 6.1.2 and 6.1.3; the public listing does not reproduce those clauses.
  • ISO/IEC 27001:2022 clauses 5.3 and 6.1.3 require assigned ISMS responsibilities, necessary-control determination, risk-owner approval of the treatment plan, and risk-owner acceptance of residual risk; they do not prescribe a universal control-owner title.
  • ISO/IEC 27001:2022 clause 5.3 requires relevant responsibilities and authorities to be assigned and communicated; clause 6.1.3 separately assigns treatment-plan approval and residual-risk acceptance to risk owners.
Show 1 more
  • ISO/IEC 27001:2022 requires planned monitoring and management review and risk reassessment when significant changes are proposed or occur; these requirements provide triggers for reviewing linked ownership records.
"Information security management systems — Requirements"
ISO/IEC 27005:2022 standard page
iso.org2 citations
Referenced sections
  • ISO/IEC 27005 provides risk-management guidance for treatment decisions and monitoring inputs in control governance.
  • ISO/IEC 27005:2022 provides information security risk-management guidance that can inform links between controls, risks, owners, and monitoring.
"Guidance on managing information security risks"

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