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The Purpose of Annex A 5.25

ISO 27001:2022 Annex A 5.25 outlines how an organisation identifies and categorises information security incidents for prioritisation and handling as such by relevant parties. A detective control that identifies and prioritises information security incidents based on event-specific variables to maintain risk.

Who Has Ownership of Annex A 5.25?

In broader terms, Incident Management is usually applicable to service-related incidents.

Because Annex A 5.25 focuses specifically on data security incidents and breaches, taking into account their highly sensitive nature, ownership of Annex A 5.25 should ideally reside with the CISO (Chief Information Security Officer).

As CISOs are typically found only in large companies and enterprise-level organisations, ownership could also rest with the COO or Service Manager, depending on the organisation.




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General Guidance on Annex A 5.25

Annex A 5.25 presents an approach to information security incident management that provides organisations with a broad operational scope rather than listing specific guidance points:

  • In order to differentiate information security incidents from information security events, organisations should collaborate to agree on a categorisation system.
  • There should be a point of contact who categorises information security events according to the categorisation scheme.
  • During the assessment process, it is crucial to involve technical personnel with the necessary skills and tools to analyse and resolve information security incidents.
  • The decision on whether or not to escalate an event to an incident should be made by all parties in collaboration.
  • An organisation should record conversations, assessments, and categorisations to inform future information security incidents and event decisions.



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What Are the Changes and Differences From ISO 27001:2013?

ISO 27001:2022 Annex A 5.25 replaces ISO 27001:2013 Annex A 16.1.4 (known as ‘Assessment of and Decision on Information Security Events’).

ISO 27001:2022 Annex A 5.25 adheres to the same underlying operational principles as 27001:2013 Annex A 16.1.4, with one small deviation.

In Annex A 16.1.4, an information security incident response team (ISIRT) is mentioned as being involved in escalation and categorisation. Annex A 5.25 makes reference to any staff members who are involved in analysing and resolving information security incidents.

Additionally, Annex A 5.25 advocates categorising events appropriately before escalation.

Table of All ISO 27001:2022 Annex A Controls

In the table below you’ll find more information on each individual ISO 27001:2022 Annex A Control.

ISO 27001:2022 Organisational Controls
Annex A Control Type ISO/IEC 27001:2022 Annex A Identifier ISO/IEC 27001:2013 Annex A Identifier Annex A Name
Organisational Controls Annex A 5.1 Annex A 5.1.1
Annex A 5.1.2
Policies for Information Security
Organisational Controls Annex A 5.2 Annex A 6.1.1 Information Security Roles and Responsibilities
Organisational Controls Annex A 5.3 Annex A 6.1.2 Segregation of Duties
Organisational Controls Annex A 5.4 Annex A 7.2.1 Management Responsibilities
Organisational Controls Annex A 5.5 Annex A 6.1.3 Contact With Authorities
Organisational Controls Annex A 5.6 Annex A 6.1.4 Contact With Special Interest Groups
Organisational Controls Annex A 5.7 NEW Threat Intelligence
Organisational Controls Annex A 5.8 Annex A 6.1.5
Annex A 14.1.1
Information Security in Project Management
Organisational Controls Annex A 5.9 Annex A 8.1.1
Annex A 8.1.2
Inventory of Information and Other Associated Assets
Organisational Controls Annex A 5.10 Annex A 8.1.3
Annex A 8.2.3
Acceptable Use of Information and Other Associated Assets
Organisational Controls Annex A 5.11 Annex A 8.1.4 Return of Assets
Organisational Controls Annex A 5.12 Annex A 8.2.1 Classification of Information
Organisational Controls Annex A 5.13 Annex A 8.2.2 Labelling of Information
Organisational Controls Annex A 5.14 Annex A 13.2.1
Annex A 13.2.2
Annex A 13.2.3
Information Transfer
Organisational Controls Annex A 5.15 Annex A 9.1.1
Annex A 9.1.2
Access Control
Organisational Controls Annex A 5.16 Annex A 9.2.1 Identity Management
Organisational Controls Annex A 5.17 Annex A 9.2.4
Annex A 9.3.1
Annex A 9.4.3
Authentication Information
Organisational Controls Annex A 5.18 Annex A 9.2.2
Annex A 9.2.5
Annex A 9.2.6
Access Rights
Organisational Controls Annex A 5.19 Annex A 15.1.1 Information Security in Supplier Relationships
Organisational Controls Annex A 5.20 Annex A 15.1.2 Addressing Information Security Within Supplier Agreements
Organisational Controls Annex A 5.21 Annex A 15.1.3 Managing Information Security in the ICT Supply Chain
Organisational Controls Annex A 5.22 Annex A 15.2.1
Annex A 15.2.2
Monitoring, Review and Change Management of Supplier Services
Organisational Controls Annex A 5.23 NEW Information Security for Use of Cloud Services
Organisational Controls Annex A 5.24 Annex A 16.1.1 Information Security Incident Management Planning and Preparation
Organisational Controls Annex A 5.25 Annex A 16.1.4 Assessment and Decision on Information Security Events
Organisational Controls Annex A 5.26 Annex A 16.1.5 Response to Information Security Incidents
Organisational Controls Annex A 5.27 Annex A 16.1.6 Learning From Information Security Incidents
Organisational Controls Annex A 5.28 Annex A 16.1.7 Collection of Evidence
Organisational Controls Annex A 5.29 Annex A 17.1.1
Annex A 17.1.2
Annex A 17.1.3
Information Security During Disruption
Organisational Controls Annex A 5.30 NEW ICT Readiness for Business Continuity
Organisational Controls Annex A 5.31 Annex A 18.1.1
Annex A 18.1.5
Legal, Statutory, Regulatory and Contractual Requirements
Organisational Controls Annex A 5.32 Annex A 18.1.2 Intellectual Property Rights
Organisational Controls Annex A 5.33 Annex A 18.1.3 Protection of Records
Organisational Controls Annex A 5.34 Annex A 18.1.4 Privacy and Protection of PII
Organisational Controls Annex A 5.35 Annex A 18.2.1 Independent Review of Information Security
Organisational Controls Annex A 5.36 Annex A 18.2.2
Annex A 18.2.3
Compliance With Policies, Rules and Standards for Information Security
Organisational Controls Annex A 5.37 Annex A 12.1.1 Documented Operating Procedures
ISO 27001:2022 People Controls
Annex A Control Type ISO/IEC 27001:2022 Annex A Identifier ISO/IEC 27001:2013 Annex A Identifier Annex A Name
People Controls Annex A 6.1 Annex A 7.1.1 Screening
People Controls Annex A 6.2 Annex A 7.1.2 Terms and Conditions of Employment
People Controls Annex A 6.3 Annex A 7.2.2 Information Security Awareness, Education and Training
People Controls Annex A 6.4 Annex A 7.2.3 Disciplinary Process
People Controls Annex A 6.5 Annex A 7.3.1 Responsibilities After Termination or Change of Employment
People Controls Annex A 6.6 Annex A 13.2.4 Confidentiality or Non-Disclosure Agreements
People Controls Annex A 6.7 Annex A 6.2.2 Remote Working
People Controls Annex A 6.8 Annex A 16.1.2
Annex A 16.1.3
Information Security Event Reporting
ISO 27001:2022 Physical Controls
Annex A Control Type ISO/IEC 27001:2022 Annex A Identifier ISO/IEC 27001:2013 Annex A Identifier Annex A Name
Physical Controls Annex A 7.1 Annex A 11.1.1 Physical Security Perimeters
Physical Controls Annex A 7.2 Annex A 11.1.2
Annex A 11.1.6
Physical Entry
Physical Controls Annex A 7.3 Annex A 11.1.3 Securing Offices, Rooms and Facilities
Physical Controls Annex A 7.4 NEW Physical Security Monitoring
Physical Controls Annex A 7.5 Annex A 11.1.4 Protecting Against Physical and Environmental Threats
Physical Controls Annex A 7.6 Annex A 11.1.5 Working In Secure Areas
Physical Controls Annex A 7.7 Annex A 11.2.9 Clear Desk and Clear Screen
Physical Controls Annex A 7.8 Annex A 11.2.1 Equipment Siting and Protection
Physical Controls Annex A 7.9 Annex A 11.2.6 Security of Assets Off-Premises
Physical Controls Annex A 7.10 Annex A 8.3.1
Annex A 8.3.2
Annex A 8.3.3
Annex A 11.2.5
Storage Media
Physical Controls Annex A 7.11 Annex A 11.2.2 Supporting Utilities
Physical Controls Annex A 7.12 Annex A 11.2.3 Cabling Security
Physical Controls Annex A 7.13 Annex A 11.2.4 Equipment Maintenance
Physical Controls Annex A 7.14 Annex A 11.2.7 Secure Disposal or Re-Use of Equipment
ISO 27001:2022 Technological Controls
Annex A Control Type ISO/IEC 27001:2022 Annex A Identifier ISO/IEC 27001:2013 Annex A Identifier Annex A Name
Technological Controls Annex A 8.1 Annex A 6.2.1
Annex A 11.2.8
User Endpoint Devices
Technological Controls Annex A 8.2 Annex A 9.2.3 Privileged Access Rights
Technological Controls Annex A 8.3 Annex A 9.4.1 Information Access Restriction
Technological Controls Annex A 8.4 Annex A 9.4.5 Access to Source Code
Technological Controls Annex A 8.5 Annex A 9.4.2 Secure Authentication
Technological Controls Annex A 8.6 Annex A 12.1.3 Capacity Management
Technological Controls Annex A 8.7 Annex A 12.2.1 Protection Against Malware
Technological Controls Annex A 8.8 Annex A 12.6.1
Annex A 18.2.3
Management of Technical Vulnerabilities
Technological Controls Annex A 8.9 NEW Configuration Management
Technological Controls Annex A 8.10 NEW Information Deletion
Technological Controls Annex A 8.11 NEW Data Masking
Technological Controls Annex A 8.12 NEW Data Leakage Prevention
Technological Controls Annex A 8.13 Annex A 12.3.1 Information Backup
Technological Controls Annex A 8.14 Annex A 17.2.1 Redundancy of Information Processing Facilities
Technological Controls Annex A 8.15 Annex A 12.4.1
Annex A 12.4.2
Annex A 12.4.3
Logging
Technological Controls Annex A 8.16 NEW Monitoring Activities
Technological Controls Annex A 8.17 Annex A 12.4.4 Clock Synchronization
Technological Controls Annex A 8.18 Annex A 9.4.4 Use of Privileged Utility ProgramsAccess Rights
Technological Controls Annex A 8.19 Annex A 12.5.1
Annex A 12.6.2
Installation of Software on Operational Systems
Technological Controls Annex A 8.20 Annex A 13.1.1 Networks Security
Technological Controls Annex A 8.21 Annex A 13.1.2 Security of Network Services
Technological Controls Annex A 8.22 Annex A 13.1.3 Segregation of Networks
Technological Controls Annex A 8.23 NEW Web filtering
Technological Controls Annex A 8.24 Annex A 10.1.1
Annex A 10.1.2
Use of Cryptography
Technological Controls Annex A 8.25 Annex A 14.2.1 Secure Development Life Cycle
Technological Controls Annex A 8.26 Annex A 14.1.2
Annex A 14.1.3
Application Security Requirements
Technological Controls Annex A 8.27 Annex A 14.2.5 Secure System Architecture and Engineering PrinciplesLearning From Information Security Incidents
Technological Controls Annex A 8.28 NEW Secure Coding
Technological Controls Annex A 8.29 Annex A 14.2.8
Annex A 14.2.9
Security Testing in Development and Acceptance
Technological Controls Annex A 8.30 Annex A 14.2.7 Outsourced Development
Technological Controls Annex A 8.31 Annex A 12.1.4
Annex A 14.2.6
Separation of Development, Test and Production Environments
Technological Controls Annex A 8.32 Annex A 12.1.2
Annex A 14.2.2
Annex A 14.2.3
Annex A 14.2.4
Change Management
Technological Controls Annex A 8.33 Annex A 14.3.1 Test Information
Technological Controls Annex A 8.34 Annex A 12.7.1 Protection of Information Systems During Audit Testing




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Toby Cane is the Senior Partner Success Manager for ISMS.online. He has worked for the company for close to 4 years and has performed a range of roles, including hosting their webinars. Prior to working in SaaS, Toby was a Secondary School teacher.

ISO 27001:2022 Annex A Controls

Organisational Controls