Cyber-physical situation awareness and decision support

Cyber-physical situation awareness is essential to management of government services and conduct of business processes. In particular, all of the nation's critical infrastructures depend upon proper operation of supervisory control and data acquisition (SCADA) devices and proper operation of these devices faces threats from possible occurrences of a variety of deliberate and inadvertent cyber events. This paper discusses an ongoing approach for incrementally improving cyber-physical situation awareness by (1) extending previous results for information architecture understanding, (2) sharing protected information among information owners whose knowledge (measurement) of their own state can be improved by choosing to share information with others, and (3) comparing measured cyber-physical system state to predicted cyber-physical system state.