What is the primary purpose of ISO 27003?

ISO 27003 primarily serves as a guide for organizations in developing and implementing an information security management system (ISMS) as described in ISO 27001. Specifically, it provides a structured approach to planning and implementing the necessary processes, policies, and technological measures that ensure the effective establishment of an ISMS. The document offers a systematic project plan, detailing the phases involved, the roles and responsibilities required, and the necessary steps for effective implementation.

By focusing on the project/implementation plan, ISO 27003 ensures that organizations have a concrete roadmap to follow when setting up their ISMS, thereby facilitating a smoother transition into secure operational states. This is especially critical for organizations looking to adopt ISO 27001 standards, as ISO 27003 is designed to align with those requirements and supports the practical execution of security management principles.

Other options may touch on relevant aspects of information security management, such as risk management or security controls, but they do not encapsulate the dedicated focus on project implementation that ISO 27003 provides.