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ISO 27001 Monitoring, Review and Change Management of Supplier Services

15/09/2025

Author: Stuart Barker | ISO 27001 Expert and Thought Leader

ISO 27001 Monitoring, Review and Change Management of Supplier Services is the process of keeping an eye on and making changes to services you get from other companies, ensuring they’re secure. It’s about making sure your suppliers are following the security rules you’ve set, and that any changes to their services don’t create new risks for your business.

Context

When you hire a supplier, like a cloud provider or a company that manages your website, you need to be sure they handle your data safely. This control is about having a plan to regularly check what they’re doing and to manage any changesthey make. For example, if a supplier decides to upgrade their system, you need to know how that might affect the security of your data. This helps you prevent problems before they happen.

Examples

  • Regular checks: Every three months, you review your cloud provider’s security reports to make sure they’re meeting their promises.
  • Change control: Your payroll provider wants to switch to a new software system. You ask for a security assessment of the new system before they make the change.
  • Performance review: You hold a meeting with your IT support company every six months to discuss their performance and any new security risks.

Relevant ISO 27001 Controls

The following controls from the ISO/IEC 27001:2022 standard are related to ISO 27001 Monitoring, Review and Change Management of Supplier Services:

About the author

Stuart Barker is an information security practitioner of over 30 years. He holds an MSc in Software and Systems Security and an undergraduate degree in Software Engineering. He is an ISO 27001 expert and thought leader holding both ISO 27001 Lead Implementer and ISO 27001 Lead Auditor qualifications. In 2010 he started his first cyber security consulting business that he sold in 2018. He worked for over a decade for GE, leading a data governance team across Europe and since then has gone on to deliver hundreds of client engagements and audits.

He regularly mentors and trains professionals on information security and runs a successful ISO 27001 YouTube channel where he shows people how they can implement ISO 27001 themselves. He is passionate that knowledge should not be hoarded and brought to market the first of its kind online ISO 27001 store for all the tools and templates people need when they want to do it themselves.

In his personal life he is an active and a hobbyist kickboxer.

His specialisms are ISO 27001 and SOC 2 and his niche is start up and early stage business.