Updated for ISO/IEC 27001:2022 (23 October 2026). This article explains Annex A.15 “Supplier relationships” of the 2013 edition. ISO/IEC 27001:2022 has replaced it: certification to the 2013 edition ended on 31 October 2025, and the 2022 Annex A has 93 controls in four themes. The principles below still apply, but the control numbers have changed. Here is where each A.15 control now sits:

2013 controlISO 27001:2022 control
A.15.1.15.19 Information security in supplier relationships
A.15.1.25.20 Addressing information security within supplier agreements
A.15.1.35.21 Managing information security in the ICT supply chain
A.15.2.1, A.15.2.25.22 Monitoring, review and change management of supplier services

Also relevant in 2022 (new controls): 5.23 Information security for use of cloud services.

See all 93 ISO 27001:2022 controls and the full 2013 mapping, check your gaps with our free ISO 27001 readiness checklist, or get expert help with an ISO 27001 readiness assessment.

In today’s interconnected business world, companies often rely on suppliers to provide them with critical goods and services. However, when these relationships are not managed securely, they can pose a significant risk to the organization’s information security. This is where the ISO 27001 standard for information security comes in. One of the critical components of this standard is the control for “Supplier Relationships,” which outlines the measures organizations should take to ensure the security of their relationships with their suppliers.

Definition of Supplier Relationships:

Supplier Relationships refer to the relationship between an organization and its suppliers, vendors, or service providers. This relationship is often critical to the operation of the organization, and it is essential to manage it securely to ensure the confidentiality, integrity, and availability of the organization’s information.

Importance of Supplier Relationships:

Supplier relationships are vital to the success of an organization. They provide access to goods and services that the organization needs to operate, but they also bring with them a range of risks to the organization’s information security. The organization must be confident that its suppliers are managing their information security appropriately, and that they have implemented appropriate controls to protect the organization’s information.

Scope and Purpose of Supplier Relationships:

The scope of supplier relationships in the context of information security refers to the measures that organizations should take to ensure the security of their relationships with their suppliers. The purpose of these measures is to reduce the risks to the organization’s information security and to ensure that the organization’s information is managed securely throughout its life cycle, from creation to destruction.

A.15 Supplier Relationships (2 objectives and 5 controls)

Sr. No.OBJECTIVES(BOLD) AND CONTROLS
A.15.1Information Secuirty in Supplier Relationships
A.15.1.1Information Security policy for supplier relationships
A.15.1.2Addressing security within supplier agreements
A.15.1.3Information and Communication Technology supply chain
A.15.2Supplier service delivery management
A.15.2.1Monitoring and review of supplier services
A.15.2.2Managing changes to supplier services

Threats to Supplier Relationships:

The threats to supplier relationships can come from a range of sources, including the suppliers themselves, their employees, and third-party entities that may be involved in the relationship. Some of the most common threats include:

  • Insider threats from employees of the supplier
  • Malicious attacks from external sources
  • Data breaches resulting from poor security practices
  • Unauthorized access to the organization’s information

Supplier Relationships controls and procedures:

To manage the risks associated with supplier relationships, organizations should implement a range of controls and procedures. Some of these include:

  • Supplier agreement and contracts management
  • Supplier security assessment and selection
  • Supplier security management
  • Monitoring and review of supplier relationships
  • Incident management and response

Supplier agreement and contracts management:

Supplier agreement and contracts management is a process in which organizations manage and monitor the contracts and agreements they have with their suppliers. This process is critical in ensuring that suppliers meet the agreed-upon requirements and expectations and that the organization receives the goods and services it requires.

One of the main purposes of supplier agreement and contract management is to establish clear and precise expectations for both parties, which can help prevent misunderstandings and disputes. Contracts should include all the necessary details, such as the scope of the project, delivery schedules, payment terms, quality standards, and any penalties for non-compliance. This helps ensure that all parties are on the same page and working towards the same goals.

Another key aspect of supplier agreement and contract management is monitoring the performance of suppliers. Organizations should regularly review the performance of their suppliers to ensure that they are meeting their obligations and providing the quality of goods and services that were agreed upon. This helps organizations identify any issues or areas for improvement, and make necessary changes to the agreement or contract if necessary.

Supplier security assessment and selection:

Before entering into a relationship with a supplier, organizations should assess the supplier’s information security posture to ensure that it is adequate for the type of relationship being established. This assessment should cover areas such as security controls, security policies and procedures, and the supplier’s overall information security posture.

Supplier security management:

Once a supplier relationship has been established, organizations should continue to monitor and manage the supplier’s information security posture. This may involve regular security assessments, audits, and reviews of the supplier’s security posture.

Best practice:

When it comes to supplier relationships, organizations should follow best practices to ensure the security of their information. These include:

  • Regularly assessing and monitoring the supplier’s information security posture
  • Ensuring that supplier agreements and contracts include appropriate clauses for information security
  • Conducting regular security assessments of suppliers
  • Implementing incident management and response procedures
  • Continuously monitoring and reviewing supplier relationships

Conclusion:

In conclusion, supplier agreement and contracts management is an essential component of supplier relationships. By establishing clear expectations, monitoring supplier performance, and making necessary adjustments, organizations can ensure that they receive the goods and services they need while maintaining strong, mutually beneficial relationships with their suppliers.

Need expert help with this in production?

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Bhaskar Soni

Bhaskar Soni is a Security Engineer and the founder of Youngster Company, based in Ahmedabad, Gujarat. He works hands-on with Linux server hardening, vulnerability assessment and penetration testing (VAPT), ISO 27001 compliance and OSINT investigations. He writes practical, tested guides for IT professionals and Indian businesses, and every article on this site is written or reviewed by him.

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