GuideGlobalISO/IEC 27001

ISO/IEC 27001 Annex A Control Evidence

Connect the 2022 Annex A reference set to the organization's actual ISMS evidence: why each necessary control was selected, whether it is implemented, what shows it operates, and how results are evaluated.

This guide helps connect risk treatment, the Statement of Applicability, ISO/IEC 27002 control guidance, internal audit results, management review, and corrective action.

Author
Sorena AI
Published
May 9, 2026
Updated
Jul 25, 2026
Sections
5

Structured answer sets in this page tree.

Primary sources
3

Cited legal and guidance references.

Publication metadata
Sorena AI
Published May 9, 2026
Updated Jul 25, 2026
Overview

ISO/IEC 27001:2022 contains 93 controls: 37 organizational, 8 people, 14 physical, and 34 technological. They are a reference set for the Clause 6.1.3 completeness comparison, not a requirement to implement all 93. This page shows a practical evidence structure for controls the organization determines are necessary.

Section 1

Start with risk treatment and the Statement of Applicability

ISO/IEC 27001:2022 does not ask teams to paste into a spreadsheet and call it done. The control evidence trail starts with the ISMS scope, information security risk assessment, and risk treatment decisions. Annex A is then used as a reference set to verify that necessary controls have not been missed.

For every necessary control, the Statement of Applicability must explain why it is included and whether it is implemented. It must also justify every excluded control. An evidence location is not one of the four required SoA contents, but adding one helps reviewers test the decision against current records.

  • Keep the traceability chain visible: scope, asset or process, risk scenario, treatment option, control, SoA rationale, implementation status, owner, and evidence location.
  • Do not mark a control as implemented just because a policy exists; connect the SoA entry to operating records such as access reviews, change tickets, supplier reviews, incident records, backup tests, logging evidence, or training completion.
  • Record exclusions as decisions, not omissions: the rationale should identify why the control is not necessary for the scoped ISMS and what would trigger a future review.
Section 2

Build evidence for sampled necessary controls

ISO/IEC 27001 does not require a separate evidence pack for every control. Where a pack or index helps, separate design evidence from operating evidence. Design evidence shows how the control is defined; operating evidence shows the process ran during the relevant period.

The evidence pack should be easy to sample. For access control, that may mean access rules, joiner-mover-leaver tickets, privileged access approvals, and periodic access reviews. For incident-related controls, it may mean event handling records, evidence preservation procedures, lessons learned, and corrective actions. For technological controls, it may mean configuration exports, monitoring alerts, vulnerability records, backup results, or audit-test safeguards.

  • Suggested fields: control ID, control purpose or intended result, owner, implementation description, SoA rationale, evidence type, authoritative system, sample period, reviewer, exceptions, and next review date.
  • Prefer evidence from normal business systems over manually curated audit folders, because live records make stale controls easier to spot.
  • Label evidence by control and period so a reviewer can distinguish current operating proof from historical implementation artifacts.
Section 3

Assign ownership and effectiveness checks

Assign an accountable owner who can explain how each necessary control operates, which records support it, and what happens when it fails. Tie ownership to the team that runs the control, such as identity, infrastructure, engineering, HR, facilities, procurement, legal, risk, security operations, or the relevant service owner.

Effectiveness checks should test whether the control achieves its intended result, not merely whether a document exists. Clause 9.1 requires the organization to decide what to monitor and measure, the methods, timing, responsibilities, and analysis, and to retain evidence of results. It does not require the same test or frequency for every control.

  • For each high-risk control, define a test method: sample review, configuration comparison, log review, ticket sampling, tabletop exercise, supplier attestation review, vulnerability retest, or incident post-review.
  • Track exceptions separately from evidence. An exception should name the affected asset or process, risk owner, accepted risk or corrective action, target date, and management-review escalation where needed.
  • Use metrics carefully: measure closure time, failed samples, overdue reviews, repeat findings, privileged-account drift, supplier evidence gaps, or incident lessons implemented, not vanity counts.
Section 4

Prepare evidence for internal audit and certification review

Internal audit should be able to test the control trail without reconstructing it from memory. The audit file should show the audit scope and criteria, the selected controls, the samples tested, results, nonconformities or observations, and reporting to relevant management.

Certification readiness improves when the team can show a current SoA, risk treatment linkage, controlled documented information, operational samples, results of monitoring and measurement, internal audit records, management review outputs, and corrective actions. The goal is not a larger folder; it is a clearer evidence path.

  • Before audit, identify current evidence for the sampled necessary controls. The quantity and period should fit the control, audit criteria, risk, and certification body's plan; one sample is not a universal rule.
  • Confirm that changed services, suppliers, locations, tools, and risk scenarios have been reflected in the risk register, SoA, evidence pack, and audit plan.
  • Keep audit findings connected to owners and due dates so corrective action can be reviewed for effectiveness, not just marked closed.
Section 5

Keep Annex A evidence current after changes

evidence becomes stale when systems, suppliers, responsibilities, threats, or business processes change. Clause 8.1 requires planned changes to be controlled and the consequences of unintended changes to be reviewed. Clause 8.2 separately requires risk assessment at planned intervals and when significant changes are proposed or occur.

Evidence gaps and repeated control failures can feed monitoring, internal audit, corrective action, risk treatment, and management review. Clause 9.3 prescribes management-review inputs and requires decisions about continual improvement opportunities and needed ISMS changes; it does not prescribe a particular evidence-quality agenda.

  • Trigger review when the ISMS scope changes, a new critical supplier is added, identity or logging tooling changes, an incident exposes a control weakness, or a recurring audit finding appears.
  • Update the SoA when control selection, implementation status, rationale, or exclusion reasoning changes.
  • Feed repeat exceptions, failed tests, overdue evidence, and control drift into corrective action and management review so improvement is visible.
Primary sources

References and citations

iso.org
Referenced sections
  • Identifies ISO/IEC 27001:2022 as the ISMS requirements standard and supports the risk treatment, Statement of Applicability, performance evaluation, audit, management review, and improvement framing used on this page.
"Information security management systems — Requirements"
iso.org
Referenced sections
  • Identifies ISO/IEC 27002:2022 as the information security controls guidance standard aligned to Annex A control themes.
"Information security controls"
iso.org
Referenced sections
  • This source supports the risk-management connection between threat, likelihood, impact, treatment choice, and control evidence.
"Guidance on managing information security risks"
Related guides

Explore more topics

ISO/IEC 27001 Annex A Control Ownership FAQ
How to assign practical owners for ISO/IEC 27001 Annex A controls without confusing control ownership with the standard's required risk-owner accountability.
ISO/IEC 27001 Audit Readiness Guide
Prepare ISO/IEC 27001 audit evidence across ISMS scope, risk assessment, risk treatment, Statement of Applicability, Annex A controls, internal audit, management review, and corrective actions.
ISO/IEC 27001 Certification Body Evidence FAQ
What ISO/IEC 27001 certification auditors may sample, how to connect requirements to operating evidence, and what the certification body does not own.
ISO/IEC 27001 Certification Stage Workflow
Plan optional ISO/IEC 27001 certification from scope readiness through Stage 1, Stage 2, findings, certification decision, surveillance, and recertification.
ISO/IEC 27001 Compliance Guide: ISMS Evidence
Build ISO/IEC 27001:2022 conformity evidence for ISMS scope, leadership, risk assessment and treatment, the Statement of Applicability, operations, audits, management review, and corrective action.
ISO/IEC 27001 FAQ: ISMS Scope, Risk and SoA
Practical ISO/IEC 27001 FAQ covering ISMS scope, risk assessment, risk treatment, Statement of Applicability, Annex A controls, certification evidence, audits, management review, and surveillance readiness.
ISO/IEC 27001 Implementation Roadmap Guide
A practical ISO/IEC 27001:2022 roadmap from context and scope through risk treatment, the SoA, control operation, internal audit, management review, corrective action, and optional certification.
ISO/IEC 27001 Internal Audit and Management Review Guide
Keep ISO/IEC 27001 internal audit and management review distinct and connected: independent audit evidence, top-management decisions, corrective actions, resources, and improvement records.
ISO/IEC 27001 Internal Audit FAQ
How should teams run ISO/IEC 27001 internal audits: who should own each step, what evidence is expected, and how findings are resolved.
ISO/IEC 27001 Management Review FAQ
What ISO/IEC 27001 management review must consider, what top management must decide, what evidence to retain, and how to set the cadence.
ISO/IEC 27001 Requirements Guide
Plain-language guide to ISO/IEC 27001:2022 Clauses 4-10: context, leadership, planning, support, operation, performance evaluation, improvement, and Annex A control selection.
ISO/IEC 27001 Risk Acceptance FAQ
How ISO/IEC 27001 risk acceptance works: criteria, risk-owner approval, residual-risk evidence, external obligations, and reassessment triggers.
ISO/IEC 27001 Risk Treatment and Residual Risk Guide
Connect ISO/IEC 27001 risk-treatment choices, necessary controls, the treatment plan, Statement of Applicability, residual-risk acceptance, owners, evidence, and review triggers.
ISO/IEC 27001 Risk Treatment Register Workflow
Build an ISO/IEC 27001 risk-treatment register that links assessed risks to treatment options, controls, SoA entries, actions, owners, residual-risk approval, evidence, and review triggers.
ISO/IEC 27001 SoA Exclusions FAQ
How should teams justify Statement of Applicability exclusions under ISO/IEC 27001? Practical answer with owners, evidence, review triggers, and external source references.
ISO/IEC 27001 SoA: workflow for gathering and documenting control evidence
Operate the ISO/IEC 27001 Statement of Applicability as a live evidence index linking necessary controls, Annex A inclusion and exclusion rationale, implementation status, owners, and proof.
ISO/IEC 27001 Statement of Applicability template: Annex A control selection and justification
Practical ISO/IEC 27001:2022 Statement of Applicability template fields for necessary controls, Annex A applicability, inclusion and exclusion rationale, status, owners, evidence, and review history.
ISO/IEC 27001 Surveillance Audits FAQ
What ISO/IEC 27001 surveillance audits check, how they differ from internal audit and recertification, and what evidence to maintain between audits.
ISO/IEC 27001 vs NIS2 Comparison
Compare voluntary ISO/IEC 27001 ISMS conformity and optional certification with NIS2 legal duties, entity scope, management accountability, incident reporting, supervision, and penalties.
ISO/IEC 27001 vs NIST CSF 2.0 Comparison
Compare ISO/IEC 27001:2022's certifiable ISMS requirements with NIST CSF 2.0's cybersecurity outcomes, Profiles, Tiers, Functions, evidence uses, and adoption choices.
ISO/IEC 27001 vs SOC 2 Comparison
Compare ISO/IEC 27001 certification with SOC 2 examination reports: criteria, scope, assurance period, auditor and certification-body roles, deliverables, evidence reuse, and claim limits.