ASD Essentials for operational technology 

This Essentials chapter is designed to provide baseline cyber security guidance, which can be applied progressively toward continued improvement in security posture. OT includes a broad set of technologies that covers process automation, instrumentation, cyber-physical operations, and industrial control systems (ICS). The target audience of this documentation includes operators of OT responsible for complex systems control, automation and safety across critical service sectors. Discover the Principles, Actions and Domains applicable to OT environments.