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Purpose of Control 5.26

Control 5.26 helps organisations to ensure that internal and external personnel are fully engaged with published incident management processes and procedures (largely those created in Control 5.24), thereby maximising the possibility of a fast, effective resolution.

Attributes Table

5.26 is a corrective control that modifies risk by ensuring that information security incidents are responded to through strict adherence to company procedures.

Control Type Information Security Properties Cybersecurity Concepts Operational Capabilities Security Domains
#Corrective #Confidentiality #Recover #Information Security Event Management #Defence
#Integrity #Respond
#Availability

Ownership of Control 5.26

Ownership of Control 5.26 should reside with a member of the senior management team whose remit includes oversight of all incident management-related activities, such as a COO or Head of Service Delivery.

The owner should also be able to directly or indirectly manage the performance of personnel who are involved in the analysis and resolution of information security-related incidents, to drive performance management and eliminate errors.




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General Guidance on Control 5.26

Control 5.26 explicitly states that information security incidents should be dealt with by a dedicated team who holds the “required competency” to affect fast and thorough resolution of any incidents that come their way (see Control 5.24).

Control 5.26 outlines 10 main guidance points to ensure that incident management procedures are adhered to:

  1. Containment and mitigation of any threats arising from the original event.
  2. Collection and corroboration of evidence immediately after an information security incident has occurred.
  3. Escalation, including crisis management, BUDR activities and overarching business continuity plans (see Controls 5.29 and 5.30).
  4. Accurate logging of all incident-related activity, including the initial response, to aid in post mortem analysis.
  5. Adhering to a strict “need to know” principle when communicating the existence of, and developments pertaining to, information security-related incidents.
  6. Remaining mindful of an organisation’s responsibilities to external organisations (clients, vendors, public bodies, regulators etc.) when communicating the wider impact of information security incidents.
  7. Closing an incident to a strict set of completion criteria.
  8. Forensic analysis (see Control 5.28).
  9. Identifying the underlying cause of an incident, once said incident has been resolved, including adequate recording and communication to all relevant parties (see Control 5.27).
  10. Managing underlying vulnerabilities that have led to information security-related events and incidents, including the identification and modification of internal processes, controls, policies and procedures.

Supporting controls

  • 5.24
  • 5.27
  • 5.28
  • 5.29
  • 5.30



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Changes and Differences from ISO 27002:2013

27002:2022-5.26 replaces 27002:2013-16.1.5 (Response to information security incidents).

ISO 27002:2022-5.26 goes a few steps further than 27002:2013-16.1.5, with the addition of four key areas for consideration:

  • The need to contain and mitigate threats arising from the original event
  • Escalation procedures that are based around crisis management and business continuity
  • Ascertaining precisely why the incident occured, and communicating specifics to all relevant parties
  • Taking remedial action to identify and modify internal processes, controls and policies that led to the original event

27002:2013-16.1.5 also makes reference to resuming “normal security level” as the primary goal of an incident response team in the early stages of an escalation. 27002:2022-5.26 makes no such reference, and instead focuses on the general need to contain threats.

New ISO 27002 Controls

New Controls
ISO/IEC 27002:2022 Control Identifier ISO/IEC 27002:2013 Control Identifier Control Name
5.7 NEW Threat intelligence
5.23 NEW Information security for use of cloud services
5.30 NEW ICT readiness for business continuity
7.4 NEW Physical security monitoring
8.9 NEW Configuration management
8.10 NEW Information deletion
8.11 NEW Data masking
8.12 NEW Data leakage prevention
8.16 NEW Monitoring activities
8.23 NEW Web filtering
8.28 NEW Secure coding
Organisational Controls
ISO/IEC 27002:2022 Control Identifier ISO/IEC 27002:2013 Control Identifier Control Name
5.1 05.1.1, 05.1.2 Policies for information security
5.2 06.1.1 Information security roles and responsibilities
5.3 06.1.2 Segregation of duties
5.4 07.2.1 Management responsibilities
5.5 06.1.3 Contact with authorities
5.6 06.1.4 Contact with special interest groups
5.7 NEW Threat intelligence
5.8 06.1.5, 14.1.1 Information security in project management
5.9 08.1.1, 08.1.2 Inventory of information and other associated assets
5.10 08.1.3, 08.2.3 Acceptable use of information and other associated assets
5.11 08.1.4 Return of assets
5.12 08.2.1 Classification of information
5.13 08.2.2 Labelling of information
5.14 13.2.1, 13.2.2, 13.2.3 Information transfer
5.15 09.1.1, 09.1.2 Access control
5.16 09.2.1 Identity management
5.17 09.2.4, 09.3.1, 09.4.3 Authentication information
5.18 09.2.2, 09.2.5, 09.2.6 Access rights
5.19 15.1.1 Information security in supplier relationships
5.20 15.1.2 Addressing information security within supplier agreements
5.21 15.1.3 Managing information security in the ICT supply chain
5.22 15.2.1, 15.2.2 Monitoring, review and change management of supplier services
5.23 NEW Information security for use of cloud services
5.24 16.1.1 Information security incident management planning and preparation
5.25 16.1.4 Assessment and decision on information security events
5.26 16.1.5 Response to information security incidents
5.27 16.1.6 Learning from information security incidents
5.28 16.1.7 Collection of evidence
5.29 17.1.1, 17.1.2, 17.1.3 Information security during disruption
5.30 5.30 ICT readiness for business continuity
5.31 18.1.1, 18.1.5 Legal, statutory, regulatory and contractual requirements
5.32 18.1.2 Intellectual property rights
5.33 18.1.3 Protection of records
5.34 18.1.4 Privacy and protection of PII
5.35 18.2.1 Independent review of information security
5.36 18.2.2, 18.2.3 Compliance with policies, rules and standards for information security
5.37 12.1.1 Documented operating procedures
People Controls
ISO/IEC 27002:2022 Control Identifier ISO/IEC 27002:2013 Control Identifier Control Name
6.1 07.1.1 Screening
6.2 07.1.2 Terms and conditions of employment
6.3 07.2.2 Information security awareness, education and training
6.4 07.2.3 Disciplinary process
6.5 07.3.1 Responsibilities after termination or change of employment
6.6 13.2.4 Confidentiality or non-disclosure agreements
6.7 06.2.2 Remote working
6.8 16.1.2, 16.1.3 Information security event reporting
Physical Controls
ISO/IEC 27002:2022 Control Identifier ISO/IEC 27002:2013 Control Identifier Control Name
7.1 11.1.1 Physical security perimeters
7.2 11.1.2, 11.1.6 Physical entry
7.3 11.1.3 Securing offices, rooms and facilities
7.4 NEW Physical security monitoring
7.5 11.1.4 Protecting against physical and environmental threats
7.6 11.1.5 Working in secure areas
7.7 11.2.9 Clear desk and clear screen
7.8 11.2.1 Equipment siting and protection
7.9 11.2.6 Security of assets off-premises
7.10 08.3.1, 08.3.2, 08.3.3, 11.2.5 Storage media
7.11 11.2.2 Supporting utilities
7.12 11.2.3 Cabling security
7.13 11.2.4 Equipment maintenance
7.14 11.2.7 Secure disposal or re-use of equipment
Technological Controls
ISO/IEC 27002:2022 Control Identifier ISO/IEC 27002:2013 Control Identifier Control Name
8.1 06.2.1, 11.2.8 User endpoint devices
8.2 09.2.3 Privileged access rights
8.3 09.4.1 Information access restriction
8.4 09.4.5 Access to source code
8.5 09.4.2 Secure authentication
8.6 12.1.3 Capacity management
8.7 12.2.1 Protection against malware
8.8 12.6.1, 18.2.3 Management of technical vulnerabilities
8.9 NEW Configuration management
8.10 NEW Information deletion
8.11 NEW Data masking
8.12 NEW Data leakage prevention
8.13 12.3.1 Information backup
8.14 17.2.1 Redundancy of information processing facilities
8.15 12.4.1, 12.4.2, 12.4.3 Logging
8.16 NEW Monitoring activities
8.17 12.4.4 Clock synchronization
8.18 09.4.4 Use of privileged utility programs
8.19 12.5.1, 12.6.2 Installation of software on operational systems
8.20 13.1.1 Networks security
8.21 13.1.2 Security of network services
8.22 13.1.3 Segregation of networks
8.23 NEW Web filtering
8.24 10.1.1, 10.1.2 Use of cryptography
8.25 14.2.1 Secure development life cycle
8.26 14.1.2, 14.1.3 Application security requirements
8.27 14.2.5 Secure system architecture and engineering principles
8.28 NEW Secure coding
8.29 14.2.8, 14.2.9 Security testing in development and acceptance
8.30 14.2.7 Outsourced development
8.31 12.1.4, 14.2.6 Separation of development, test and production environments
8.32 12.1.2, 14.2.2, 14.2.3, 14.2.4 Change management
8.33 14.3.1 Test information
8.34 12.7.1 Protection of information systems during audit testing

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Sam Peters

Sam is Chief Product Officer at ISMS.online and leads the development on all product features and functionality. Sam is an expert in many areas of compliance and works with clients on any bespoke or large-scale projects.

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