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The Standard itself - Annex A

The Annex A contains 93 controls that you may or may not have to implement​

The ISO 27001 standard comes with an Annex that provides a list of 93 safeguards (controls) that can be implemented to decrease risks and comply with security requirements from interested parties.

There is nothing in clauses 4 to 10 that says these security controls must (all) be implemented. So what do you do with these controls?

Well, Clause 6.1.3c states that you must compare the controls you have determined to be mandatory with the controls provided in Annex A and verify that no necessary controls have been omitted. You will document this evaluation in the Statement of Applicability, which is part of the documentation you must maintain. So they do have a clear and important purpose.

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Tidal makes it very easy to comply with this requirement. Once you have completed your risk assessment we’ll already select controls from the Tidal library that are likely to satisfy the required risk mitigation. The Tidal controls are also already mapped to applicable Annex controls, and all Annex controls are mapped, guaranteeing the standard’s requirements are met. Just make sure to review everything and adjust as necessary to your needs.

Structure of Annex A​

Annex A follows a predefined structure:

  • Chapter 1: Scope (of the Annex A document itself)
  • Chapter 2: Normative references (empty chapter)
  • Chapter 3: Terms, definitions and abbreviated terms
  • Chapter 4: Structure of this document
  • Chapter 5: Organisational Controls (37 controls)
  • Chapter 6: People Controls (8 controls)
  • Chapter 7: Physical Controls (14 controls)
  • Chapter 8: Technological Controls (34 controls)
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All the controls below can also be found, with guidance, inside the Tidal platform (Frameworks page).

Chapter 5: Organisational Controls​

  • 5.1 Policies for information security
  • 5.2 Information security roles and responsibilities
  • 5.3 Segregation of duties
  • 5.4 Management responsibilities
  • 5.5 Contact with authorities
  • 5.6 Contact with special interest groups
  • 5.7 Threat intelligence
  • 5.8 Information security in project management
  • 5.9 Inventory of information and other associated assets
  • 5.10 Acceptable use of information and other associated assets
  • 5.11 Return of assets
  • 5.12 Classification of information
  • 5.13 Labelling of information
  • 5.14 Information transfer
  • 5.15 Access control
  • 5.16 Identity management
  • 5.17 Authentication information
  • 5.18 Access rights
  • 5.19 Information security in supplier relationships
  • 5.20 Addressing information security within supplier agreements
  • 5.21 Managing information security in the ICT supply chain
  • 5.22 Monitoring, review and change management of supplier services
  • 5.23 Information security for use of cloud services
  • 5.24 Information security incident management planning and preparation
  • 5.25 Assessment and decision on information security events
  • 5.26 Response to information security incidents
  • 5.27 Learning from information security incidents
  • 5.28 Collection of evidence
  • 5.29 Information security during disruption
  • 5.30 ICT readiness for business continuity
  • 5.31 Legal, statutory, regulatory and contractual requirements
  • 5.32 Intellectual property rights
  • 5.33 Protection of records
  • 5.34 Privacy and protection of PII
  • 5.35 Independent review of information security
  • 5.36 Compliance with policies, rules and standards for information security
  • 5.37 Documented operating procedures

Chapter 6: People controls​

  • 6.1 Screening
  • 6.2 Terms and conditions of employment
  • 6.3 Information security awareness, education and training
  • 6.4 Disciplinary process
  • 6.5 Responsibilities after termination or change of employment
  • 6.6 Confidentiality or non-disclosure agreements
  • 6.7 Remote working
  • 6.8 Information security event reporting

Chapter 7: Physical controls​

  • 7.1 Physical security perimeters
  • 7.2 Physical entry
  • 7.3 Securing offices, rooms and facilities
  • 7.4 Physical security monitoring
  • 7.5 Protecting against physical and environmental threats
  • 7.6 Working in secure areas
  • 7.7 Clear desk and clear screen
  • 7.8 Equipment siting and protection
  • 7.9 Security of assets off-premises
  • 7.10 Storage media
  • 7.11 Supporting utilities
  • 7.12 Cabling security
  • 7.13 Equipment maintenance
  • 7.14 Secure disposal or re-use of equipment

Chapter 8: Technological controls​

  • 8.1 User endpoint devices
  • 8.2 Privileged access rights
  • 8.3 Information access restriction
  • 8.4 Access to source code
  • 8.5 Secure authentication
  • 8.6 Capacity management
  • 8.7 Protection against malware
  • 8.8 Management of technical vulnerabilities
  • 8.9 Configuration management
  • 8.10 Information deletion
  • 8.11 Data masking
  • 8.12 Data leakage prevention
  • 8.13 Information backup
  • 8.14 Redundancy of information processing facilities
  • 8.15 Logging
  • 8.16 Monitoring activities
  • 8.17 Clock synchronization
  • 8.18 Use of privileged utility programs
  • 8.19 Installation of software on operational systems
  • 8.20 Networks security
  • 8.21 Security of network services
  • 8.22 Segregation of networks
  • 8.23 Web filtering
  • 8.24 Use of cryptography
  • 8.25 Secure development life cycle
  • 8.26 Application security requirements
  • 8.27 Secure system architecture and engineering principles
  • 8.28 Secure coding
  • 8.29 Security testing in development and acceptance
  • 8.30 Outsourced development
  • 8.31 Separation of development, test and production environments
  • 8.32 Change management
  • 8.33 Test information
  • 8.34 Protection of information systems during audit testing
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