What is a key requirement of any physical security plan according to CIP-006 R1?

A key requirement of any physical security plan according to CIP-006 R1 is that it should include documented requirements that outline specific policies and procedures for physical security measures. This documentation serves as a foundation for ensuring compliance with the standards, detailing how access to Cyber Systems is controlled and monitored. It essentially reflects a thorough and structured approach to mitigating risks associated with unauthorized physical access.

This requirement underscores the importance of having clear and well-defined protocols in place. Documenting requirements not only helps in maintaining security but also facilitates training, evaluation, and auditing processes, ensuring that all personnel are aware of their responsibilities regarding physical security.

The other options do not capture the essence of what is mandated by CIP-006 R1 as effectively. For instance, while data encryption protocols are crucial for cybersecurity, they do not directly relate to physical security plans. Similarly, access control is indeed a crucial aspect, but it is not confined to physical hardware alone; it encompasses all aspects of physical security, including personnel and operational protocols. Lastly, while cybersecurity measures are vital, CIP-006 specifically emphasizes physical security rather than focusing solely on cyber-related protocols.