Modeling Human-Cyber Interactions in Safety-Critical Cyber-Physical/Industrial Control Systems

Safety-critical cyber-physical and industrial control systems (CPS/ICS) such as electrical power grids and water treatment plants are prone to external attacks and internal mistakes or threats. Still, research in this area does not involve high-fidelity human models in their CPS state estimation models. We provide a starting point to modeling the expansiveness of human behavior in CPS by proposing Cyber-Human Interaction Modeling for Cyber-Physical Systems (CHIMPS), a novel decision-making-based process to explicitly integrate human models in the design and implementation of CPS. We present a use case of our process focusing on safety-critical ICS that simulates a human ICS operator maintaining a water treatment plant.