Is a Supplier Security Policy a requirement under ISO 27001?

A Supplier Security Policy is indeed considered a fundamental component under ISO 27001, aligning with the standard's focus on risk management regarding third-party relationships. ISO 27001 emphasizes the necessity of assessing and managing risks associated with external suppliers that have access to sensitive information or systems.

The standard does not explicitly state that a Supplier Security Policy must exist, but it does require organizations to implement controls that ensure the protection of information and information systems. This includes taking into account the security measures in place for suppliers and ensuring that their policies and practices are adequate to mitigate identified risks.

Developing a Supplier Security Policy reflects a proactive approach to risk management, helping to ensure that suppliers are aligned with the organization's information security objectives. This is particularly important in maintaining the integrity and confidentiality of data, especially when suppliers handle or have the potential to handle sensitive information.

Therefore, creating a Supplier Security Policy not only aids in compliance with ISO 27001 but also enhances overall security by establishing formal requirements and expectations for supplier relationships.