Cyber-physical systems(CPSs)are new emerging systems that seamlessly integrate physical systems,communication systems and computation systems.Their wide use has been witnessed in the past decades in many crossdiscipline fields such as smart energy systems,industrial process control,aerospace and automobile engineering,health-care and assisted living,to just name a few.For many of these systems,secure operations are of key con- Cyber-physical systems (CPSs) are new emerging systems that seamlessly integrate physical systems, communication systems and computing systems. Their wide use has has beennessed in the past decades in many crossdiscipline fields such as smart energy systems, industrial process control, aerospace and automobile engineering, health-care and assisted living, to just name a few. For many of these systems, secure operations are of key con-