IIoT endpoints deployed as field devices can be exposed to extreme weather conditions, and are vulnerable to theft, hardware tampering, vandalism, and so on. Physical security mechanisms are discussed in greater detail in Chapter 5, Securing Connectivity and Communications. The interested reader may also refer to existing guidelines on endpoint physical security. Physical and Environmental Protection of NIST SP 800-53 (NIST-PE) provides information on methods for physical protection, access control, and monitoring. The Industrial Internet Security Framework (IIC-IISF) can also be referred to, to obtain detailed guidance on this topic.
