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ISO:27001

Annex A Controls

A step-by-step overview of all the annex a controls in ISO:27001, with links to in-depth walkthroughs of each annex.

PURPOSE:

To provide guidance for management and support for information security, in line with any relevant legislation and regulations.

  • A.5.1.1 Policies for information security
  • A.5.1.2 Review of the policies for information security

PURPOSE:

To establish management frameworks for information security, and help govern the security of remote working and the use of mobile devices.

  • A.6.1.1 Information security roles and responsibilities 
  • A.6.1.2 Segregation of duties 
  • A.6.1.3 Contact with authorities 
  • A.6.1.4 Contact with special interest groups 
  • A.6.1.5 Information security in project management
  • A.6.2.1 Mobile device policy 
  • A.6.2.2 Teleworking

PURPOSE:

  • To establish that any prospective employees are suitable for the roles they are considered for. 
  • To ensure current employees are aware of, and fulfil their information security responsibilities during employment.
  • To protect the organisation’s interests any time employees change roles or leave the organisation.
  • A.7.1.1 Screening 
  • A.7.1.2 Terms and conditions of employment
  • A.7.2.1 Management responsibilities 
  • A.7.2.2 Information security awareness, education and training 
  • A.7.2.3 Disciplinary process
  • A.7.3.1 Termination or change of employment responsibilities

PURPOSE:

  • To identify information assets, and define responsibilities to protect them
  • To ensure information is adequately protected
  • To prevent any unauthorised disclosure, modification, removal or destruction of information stored on media.  
  • A.8.1.1 Inventory of assets 
  • A.8.1.2 Ownership of assets 
  • A.8.1.3 Acceptable use of assets 
  • A.8.1.4 Return of assets
  • A.8.2.1 Classification of information 
  • A.8.2.2 Labelling of information 
  • A.8.2.3 Handling of assets
  • A.8.3.1 Management of removable media 
  • A.8.3.2 Disposal of media 
  • A.8.3.3 Physical media transfer

PURPOSE:

  • To limit access to any information and information processing facilities 
  • To ensure only authorised users are permitted access, and refuse any unauthorised access
  • A.9.1.1 Access control policy 
  • A.9.1.2 Access to networks and network services
  • A.9.2.1 User registration and de-registration 
  • A.9.2.2 User access provisioning 
  • A.9.2.3 Management of privileged access rights 
  • A.9.2.4 Management of secret authentication information of users 
  • A.9.2.5 Review of user access rights 
  • A.9.2.6 Removal or adjustment of access rights
  • A.9.3.1 Use of secret authentication information
  • A.9.4.1 Information access restriction 
  • A.9.4.2 Secure log-on procedures 
  • A.9.4.3 Password management system 
  • A.9.4.4 Use of privileged utility programs 
  • A.9.4.5 Access control to program source code

PURPOSE:

To make sure organisations implement cryptography effectively, to protect the confidentiality, integrity and availability of information.

  • A.10.1.1 Policy on the use of cryptographic 
  • A.10.1.2 Key management

PURPOSE:

  • To stop unauthorised physical access, damage or interference to information and information processing facilities
  • To ensure against loss, damage, theft or compromise of assets and interruptions to an organisation’s operations
  • A.11.1.1 Physical security perimeter 
  • A.11.1.2 Physical entry controls 
  • A.11.1.3 Securing offices, rooms and facilities 
  • A.11.1.4 Protecting against external and environmental threats 
  • A.11.1.5 Working in secure areas 
  • A.11.1.6 Delivery and loading areas
  • A.11.2.1 Equipment siting and protection Control 
  • A.11.2.2 Supporting utilities 
  • A.11.2.3 Cabling security 
  • A.11.2.4 Equipment maintenance 
  • A.11.2.5 Removal of assets 
  • A.11.2.6 Security of equipment and assets off-premises 
  • A.11.2.7 Secure disposal or reuse of equipment
  • A.11.2.8 Unattended user equipment 
  • A.11.2.9 Clear desk and clear screen policy

PURPOSE:

  • To ensure that information processing facilities are operated properly and in a secure manner
  • To protect against malware in information and information processing facilities 
  • Protecting against loss of data, through use of backups and regular software / systems testing
  • To ensure key events are recorded and evidence is generated
  • To ensure the integrity of operational systems
  • To prevent the exploitation of technical vulnerabilities 
  • To minimise any impact that audits and audit activities will have on operational systems
  • A.12.1.1 Documented operating procedures 
  • A.12.1.2 Change management 
  • A.12.1.3 Capacity management 
  • A.12.1.4 Separation of development, testing and operational environments
  • A.12.2.1 Controls against malware
  • A.12.3.1 Information backup
  • A.12.4.1 Event logging 
  • A.12.4.2 Protection of log information 
  • A.12.4.3 Administrator and operator logs 
  • A.12.4.4 Clock synchronisation
  • A.12.5.1 Installation of software on operational systems
  • A.12.6.1 Management of technical vulnerabilities 
  • A.12.6.2 Restrictions on software installation
  • A.12.7.1 Information systems audit controls

PURPOSE:

To ensure that information is protected in networks, and its supporting information processing facilities

  • A.13.1.1 Network controls 
  • A.13.1.2 Security of network services 
  • A.13.1.3 Segregation in networks
  • A.13.2.1 Information transfer policies and procedures 
  • A.13.2.2 Agreements on information transfer 
  • A.13.2.3 Electronic messaging 
  • A.13.2.4 Confidentiality or nondisclosure agreements

PURPOSE:

  • To embed information security as a key part of information systems
  • To protect any information involved in application services passing over public networks
  • To embed information security within the development lifecycle
  • A.14.1.1 Information security requirements analysis and specification 
  • A.14.1.2 Securing application services on public networks 
  • A.14.1.3 Protecting application services transactions
  • A.14.2.1 Secure development policy 
  • A.14.2.2 System change control procedures 
  • A.14.2.3 Technical review of applications after operating platform changes 
  • A.14.2.4 Restrictions on changes to software packages 
  • A.14.2.5 Secure system engineering principles 
  • A.14.2.6 Secure development environment 
  • A.14.2.7 Outsourced development 
  • A.14.2.8 System security testing 
  • A.14.2.9 System acceptance testing
  • A.14.3.1 Protection of test data

PURPOSE:

  • To protect and secure any assets which can be accessed by suppliers
  • To maintain the agreed level of service delivery and information security
  • A.15.1.1 Information security policy for supplier relationships 
  • A.15.1.2 Addressing security within supplier agreements 
  • A.15.1.3 Information and communication technology supply chain
  • A.15.2.1 Monitoring and review of supplier services 
  • A.15.2.2 Managing changes to supplier services

PURPOSE:

To ensure that information security incidents are managed consistently and effectively, with proper communications.

  • A.16.1.1 Responsibilities and procedures 
  • A.16.1.2 Reporting information security events 
  • A.16.1.3 Reporting information security weaknesses 
  • A.16.1.4 Assessment of and decision on information security events 
  • A.16.1.5 Response to information security incidents 
  • A.16.1.6 Learning from information security incidents 
  • A.16.1.7 Collection of evidence

PURPOSE:

To ensure that continuity within information security is embedded in the organisations business continuity management systems.

  • A.17.1.1 Planning information security continuity 
  • A.17.1.2 Implementing information security continuity 
  • A.17.1.3 Verify, review and evaluate information security continuity
  • A.17.2.1 Availability of information processing facilities

PURPOSE:

  • To avoid breaches pertaining to any legal, statutory, regulatory or contractual obligations (related to information security)
  • To ensure that information security is in line with organisational policies and procedures in its implementation and operation
  • A.18.1.1 Identification of applicable legislation and contractual requirements 
  • A.18.1.2 Intellectual property rights 
  • A.18.1.3 Protection of records 
  • A.18.1.4 Privacy and protection of personally identifiable information
  • A.18.1.5 Regulation of cryptographic controls
  • A.18.2.1 Independent review of information security 
  • A.18.2.2 Compliance with security policies and standards 
  • A.18.2.3 Technical compliance review