A.5 Organizational Controls Implementation Guide

Purpose

How to use this page

Use this as a navigation and decision page. Follow the links for detailed control, audit, risk, evidence, and exam notes.

This note converts the covered A.5 control library into an implementer view. Use the individual control notes for detail and this guide for build sequencing.

Implementation grouping

Build area	Controls	What to implement first
Governance foundation	A.5.1 Policies for Information Security, A.5.2 Information Security Roles and Responsibilities, A.5.4 Management Responsibilities	Policy structure, role ownership, management enforcement
Conflict control	A.5.3 Segregation of Duties	Conflict matrix, compensating controls, approval/review split
External awareness	A.5.5 Contact with Authorities, A.5.6 Contact with Special Interest Groups, A.5.7 Threat Intelligence	Contact registers, intelligence process, action tracking
Secure change and projects	A.5.8 Information Security in Project Management	Security requirements and risk review inside project governance
Asset and information handling	A.5.9 Inventory of Information and Other Associated Assets, A.5.10 Acceptable Use of Information and Other Associated Assets, A.5.11 Return of Assets, A.5.12 Classification of Information, A.5.13 Labelling of Information, A.5.14 Information Transfer	Inventory, ownership, classification, handling, transfer, return
Access and identity	A.5.15 Access Control, A.5.16 Identity Management, A.5.17 Authentication Information, A.5.18 Access Rights	Access policy, identity lifecycle, authentication handling, access reviews
Supplier and cloud security	A.5.19 Information Security in Supplier Relationships, A.5.20 Addressing Information Security Within Supplier Agreements, A.5.21 Managing Information Security in the ICT Supply Chain, A.5.22 Monitoring, Review and Change Management of Supplier Services, A.5.23 Information Security for Use of Cloud Services	Supplier register, risk assessment, agreement clauses, ICT dependency review, cloud register, shared responsibility, ongoing monitoring, exit planning
Incident management lifecycle	A.5.24 Information Security Incident Management Planning and Preparation, A.5.25 Assessment and Decision on Information Security Events, A.5.26 Response to Information Security Incidents, A.5.27 Learning from Information Security Incidents, A.5.28 Collection of Evidence	Incident process, event triage, response records, lessons learned, evidence handling
Continuity and ICT readiness	A.5.29 Information Security During Disruption, A.5.30 ICT Readiness for Business Continuity	Security continuity requirements, ICT recovery requirements, RTO/RPO, continuity testing
Legal and IP compliance	A.5.31 Legal, Statutory, Regulatory and Contractual Requirements, A.5.32 Intellectual Property Rights	Requirements register, compliance ownership, licence inventory, IP and AI-content review
Records and privacy	A.5.33 Protection of Records, A.5.34 Privacy and Protection of PII	Records retention/protection, PII inventory, privacy requirements, access review, breach readiness
Assurance and operations governance	A.5.35 Independent Review of Information Security, A.5.36 Compliance with Policies, Rules and Standards for Information Security, A.5.37 Documented Operating Procedures	Independent reviews, compliance checks, technical conformity checks, controlled operating procedures

Control build matrix

Control	Implementer output	Evidence anchor	Risk link
A.5.1	Policy framework and review process	Policy Register, Policy Review Checklist	Policy risk, compliance risk
A.5.2	Security role definitions and RACI	Control Owner Register, RACI Matrix	Accountability risk
A.5.3	Segregation matrix and exceptions	Segregation of Duties Matrix, SoD Exception Record	Fraud, error, privilege abuse
A.5.4	Manager accountability process	Management Security Responsibilities Checklist	Non-compliance and culture risk
A.5.5	Authority contact register	Authority Contact Register	Legal, incident, continuity risk
A.5.6	Specialist group participation register	Special Interest Group Participation Register	Knowledge and threat-awareness risk
A.5.7	Threat intelligence workflow	Threat Intelligence Register	Threat-driven risk
A.5.8	Security requirements in projects	Project Security Requirements Register	Project/change risk
A.5.9	Asset and information inventory	Information and Associated Asset Inventory	Unknown asset risk
A.5.10	Acceptable use and handling rules	Acceptable Use and Information Handling Rules	Misuse and mishandling risk
A.5.11	Return and removal process	Asset Return Checklist	Leaver/mover/contractor risk
A.5.12	Classification scheme	Information Classification and Handling Matrix	Over/under-protection risk
A.5.13	Labelling process	Information Classification and Handling Matrix	Handling failure risk
A.5.14	Transfer rules and agreements	Information Transfer Rules Matrix	Data leakage/transfer risk
A.5.15	Access control rules	Access Control Matrix	Unauthorized access risk
A.5.16	Identity lifecycle	Identity Lifecycle Register	Orphan/stale identity risk
A.5.17	Authentication handling standard	Authentication Information Handling Standard	Credential compromise risk
A.5.18	Access request/review register	Access Rights Request and Review Register	Excessive access risk
A.5.19	Supplier security process	Supplier Security Register, Supplier Security Risk Assessment	Third-party risk
A.5.20	Supplier security clauses	Supplier Security Agreement Requirements Checklist, Supplier Security Responsibility Matrix	Contractual control gap risk
A.5.21	ICT dependency register	ICT Supply Chain Risk Register	Inherited supply-chain risk
A.5.22	Supplier review/change log	Supplier Service Review and Change Log	Supplier drift and change risk
A.5.23	Cloud service governance	Cloud Service Register, Cloud Security Requirements and Exit Checklist	Cloud dependency, shared responsibility, data location, configuration, and exit risk
A.5.24	Incident management readiness	Incident Management Plan, Incident Roles and Communications Matrix	Incident impact, response delay, evidence loss, and improvement risk
A.5.25	Event triage and incident classification	Event Triage and Incident Classification Register	Missed incident, over-escalation, notification delay risk
A.5.26	Incident response execution	Incident Response Record	Poor containment, recovery, communication, and evidence decision risk
A.5.27	Lessons learned and improvement	Incident Lessons Learned Register, Corrective Action Tracker	Recurrence, weak corrective action, and control effectiveness risk
A.5.28	Evidence collection and preservation	Evidence Collection and Chain of Custody Log	Evidence loss, contamination, legal defensibility, and root-cause risk
A.5.29	Security continuity requirements	Information Security Continuity Requirements	Security degradation during disruption and crisis workaround risk
A.5.30	ICT continuity readiness	ICT Continuity Requirements and Test Record	Availability, restoration, dependency, RTO/RPO, and supplier continuity risk
A.5.31	Legal and contractual requirements process	Legal and Contractual Requirements Register, Cryptographic Legal Requirements Assessment	Legal, regulatory, statutory, contractual, jurisdictional, and cryptographic compliance risk
A.5.32	IP rights protection process	Intellectual Property Rights Register, Software and Content Licence Compliance Inventory, AI-Generated Content IP Review Checklist	Copyright, software licensing, source-code rights, open-source, subscription, and AI-output risk
A.5.33	Records retention and protection process	Records Retention and Protection Register, Records Inventory Review Checklist	Loss, destruction, falsification, unauthorized access/release, retention, and accessibility risk
A.5.34	PII privacy governance process	PII Inventory and Privacy Requirements Matrix, PII Handling and Access Review Checklist, Privacy Breach Notification Readiness Checklist	Privacy, PII processing, breach notification, access, retention, and transfer risk
A.5.35	Independent information security review	Independent Information Security Review Plan and Report, Corrective Action Tracker	Assurance, objectivity, significant-change, control effectiveness, and improvement risk
A.5.36	Policy and technical compliance review	Policy and Technical Compliance Review Register, Technical Compliance Review Plan	Policy drift, technical nonconformity, unauthorized testing, and repeated issue risk
A.5.37	Controlled operating procedure library	Operating Procedure Register, Operating Procedure Review and Change Checklist	Operational error, tribal knowledge, unauthorized procedure change, and supplier-operation risk

Iso27001
ISO27002
Implementer guide
Annex a
Organizational controls

Note Metadata

Aliases: A.5 Implementation Guide

Source: 05 Implementer Guide/A.5 Organizational Controls Implementation Guide.md

Graph-sourced resources

Templates and evidence

Implementer templates

Working artifacts for control owners and operators.

Evidence Collection and Chain of Custody Log

Auditor evidence packs

Evidence collections and audit-facing verification material.

Template - Corrective Action Tracker