ISO 27001 Annex A 7.11 Supporting Utilities

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ISO 27001 Supporting Utilities

The focus for this ISO 27001 Control is your utilities like power and water. As one of the ISO 27001 controls this is about protecting yourself from interruption or failure of utilities.

You will learn what the ISO 27001 control 7.11 is, how to simply and easily implement it for ISO 27001 certification and I will show you some common gotchas so you can avoid them.

What is ISO 27001 Annex A 7.11 Supporting Utilities?

ISO 27001 Annex A 7.11 Supporting Utilities is an ISO 27001 control that looks to make sure you have consider services such as power and internet connectivity and what you will do if they go down.

ISO 27001 Annex A 7.11 Purpose

The purpose of Annex A 7.11 is to prevent loss, damage or compromise of information and other associated assets, or interruption to the organisations operations due to failure and disruption of supporting utilities.

ISO 27001 Annex A 7.11 Definition

The ISO 27001 standard defines Annex A 7.11 as:

Information processing facilities should be protected from power failures and other disruptions caused by failures in supporting utilities.

ISO 27001:2022 Annex A 7.11 Supporting Utilities


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How to implement ISO 27001 Annex A 7.11

General Guidance

Supporting utilities are the utilities that a company provides as a service such as an electricity or gas supply. As a physical control this relates to information processing utilities such as data centres and server rooms but we can consider it in the context of end point user devices as well.

This control is really looking at availability, and the ability to continue to provide a service if the supply of power is interrupted.

To some extent this control is outside of your gift to control but there are some considerations that you can put in place and evidence.

The standard is a little overkill and for most small organisations elements of this will not apply.

Operate and Maintain Equipment

To meet the control you would, as with everything, operate any equipment that supports the utilities in line with the manufacturers guidelines. This usually means appropriate operation and professional maintenance. The professional maintenance would include testing and inspection although we would expect this to be a legal and regulatory requirement anyway, usually around health and safety.

Internet of Things (IOT)

The control raises an interesting point about not connecting support equipment to the internet if it isn’t necessary, which is a nod to the move to the internet of things (IOT).

Emergency Supporting Controls

Finally for this control is guidance on emergency supporting controls. What we mean here are things like emergency lighting, communications, cut off switches, emergency exits. As mentioned before this overkill for a small organisation and covered by your cloud provider where you have one.

The advice here is, if you have a server room or information processing facility to bring in professional third parties to advise and implement. This is not something you will undertake yourself and there are many laws that govern this that are outside your capability. Cover it in you business continuity plan on a practical side consider if you need to think about Uninterrupted Power Supplies (UPS) and alternatives for network connectivity.

ISO 27001 Templates

ISO 27001 templates have the advantage of being a massive boost that can save time and money so before we get into the implementation guide we consider these pre written templates that will sky rocket your implementation. Not interested in ISO 27001 templates, then you can skip to the next section.

How to comply with ISO 27001 Annex A 7.11

To comply with ISO 27001 Annex A 7.11 you are going to

  • Get the help of a professional third party to put in place controls around supporting utilities where required.
  • Have policies and procedures in place
  • Assess your assets and perform a risk assessment
  • Implement controls proportionate to the risk posed
  • Test the controls that you have to make sure they are working

Top 3 Mistakes People Make for ISO 27001 Annex A 7.11

The top 3 mistakes people make for ISO 27001 Annex A 7.11 are

1. You have no processing facilities

If everything is in the cloud then this control is potentially irrelevant to you.

2. One or more members of your team haven’t done what they should have done

Prior to the audit check that all members of the team have done what they should have. Is it include in your business continuity plan if it is relevant and have you test the plan. Check!

3. Your document and version control is wrong

Keeping your document version control up to date, making sure that version numbers match where used, having a review evidenced in the last 12 months, having documents that have no comments in are all good practices.

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Controls and Attribute Values

Control typeInformation
security properties
Security domains
PreventiveAvailabilityProtectPhysical SecurityProtection

ISO 27001:2022 requirements

Organisational Controls - A5

ISO 27001 Annex A 5.1 Policies for information security

ISO 27001 Annex A 5.2 Information Security Roles and Responsibilities

ISO 27001 Annex A 5.3 Segregation of duties

ISO 27001 Annex A 5.4 Management responsibilities

ISO 27001 Annex A 5.5 Contact with authorities

ISO 27001 Annex A 5.6 Contact with special interest groups

ISO 27001 Annex A 5.7 Threat intelligence – new

ISO 27001 Annex A 5.8 Information security in project management

ISO 27001 Annex A 5.9 Inventory of information and other associated assets – change

ISO 27001 Annex A 5.10 Acceptable use of information and other associated assets – change

ISO 27001 Annex A 5.11 Return of assets

ISO 27001 Annex A 5.11 Return of assets

ISO 27001 Annex A 5.13 Labelling of information

ISO 27001 Annex A 5.14 Information transfer

ISO 27001 Annex A 5.15 Access control

ISO 27001 Annex A 5.16 Identity management

ISO 27001 Annex A 5.17 Authentication information – new

ISO 27001 Annex A 5.18 Access rights – change

ISO 27001 Annex A 5.19 Information security in supplier relationships

ISO 27001 Annex A 5.20 Addressing information security within supplier agreements

ISO 27001 Annex A 5.21 Managing information security in the ICT supply chain – new

ISO 27001 Annex A 5.22 Monitoring, review and change management of supplier services – change

ISO 27001 Annex A 5.23 Information security for use of cloud services – new

ISO 27001 Annex A 5.24 Information security incident management planning and preparation – change

ISO 27001 Annex A 5.25 Assessment and decision on information security events 

ISO 27001 Annex A 5.26 Response to information security incidents

ISO 27001 Annex A 5.27 Learning from information security incidents

ISO 27001 Annex A 5.28 Collection of evidence

ISO 27001 Annex A 5.29 Information security during disruption – change

ISO 27001 Annex A 5.31 Identification of legal, statutory, regulatory and contractual requirements

ISO 27001 Annex A 5.32 Intellectual property rights

ISO 27001 Annex A 5.33 Protection of records

ISO 27001 Annex A 5.34 Privacy and protection of PII

ISO 27001 Annex A 5.35 Independent review of information security

ISO 27001 Annex A 5.36 Compliance with policies and standards for information security

ISO 27001 Annex A 5.37 Documented operating procedures 

Technology Controls - A8

ISO 27001 Annex A 8.1 User Endpoint Devices

ISO 27001 Annex A 8.2 Privileged Access Rights

ISO 27001 Annex A 8.3 Information Access Restriction

ISO 27001 Annex A 8.4 Access To Source Code

ISO 27001 Annex A 8.5 Secure Authentication

ISO 27001 Annex A 8.6 Capacity Management

ISO 27001 Annex A 8.7 Protection Against Malware

ISO 27001 Annex A 8.8 Management of Technical Vulnerabilities

ISO 27001 Annex A 8.9 Configuration Management 

ISO 27001 Annex A 8.10 Information Deletion

ISO 27001 Annex A 8.11 Data Masking

ISO 27001 Annex A 8.12 Data Leakage Prevention

ISO 27001 Annex A 8.13 Information Backup

ISO 27001 Annex A 8.14 Redundancy of Information Processing Facilities

ISO 27001 Annex A 8.15 Logging

ISO 27001 Annex A 8.16 Monitoring Activities

ISO 27001 Annex A 8.17 Clock Synchronisation

ISO 27001 Annex A 8.18 Use of Privileged Utility Programs

ISO 27001 Annex A 8.19 Installation of Software on Operational Systems

ISO 27001 Annex A 8.20 Network Security

ISO 27001 Annex A 8.21 Security of Network Services

ISO 27001 Annex A 8.22 Segregation of Networks

ISO 27001 Annex A 8.23 Web Filtering

ISO 27001 Annex A 8.24 Use of CryptographyISO27001 Annex A 8.25 Secure Development Life Cycle

ISO 27001 Annex A 8.26 Application Security Requirements

ISO 27001 Annex A 8.27 Secure Systems Architecture and Engineering Principles

ISO 27001 Annex A 8.28 Secure Coding

ISO 27001 Annex A 8.29 Security Testing in Development and Acceptance

ISO 27001 Annex A 8.30 Outsourced Development

ISO 27001 Annex A 8.31 Separation of Development, Test and Production Environments

ISO 27001 Annex A 8.32 Change Management

ISO 27001 Annex A 8.33 Test Information

ISO 27001 Annex A 8.34 Protection of information systems during audit testing