A testbed for integrated fault diagnosis and cyber security investigation

The protection of Critical Infrastructures represents a fundamental topic of interest for the modern societies. The testing in real scenarios is hard to achieve due to the severe interdependence between these critical systems and the human well-being. The paper is devoted to introduce a low-cost testbed developed to emulate a Critical Infrastructure as complex cyber-physical system. Moreover, it proposes an approach to identify cyber threats exploiting both cyber and physical behavior of the system. Specifically, common tools from model based fault diagnosis and intrusion detection are applied to determine incipient threats and support for the operator in decision making. All the hardware and software developed are implemented in an open-source fashion in order to share investigation resources with the scientific community.