Trustworthy cyber-physical systems — A review

Given the increasing prevalence of cyber-physical systems in both the critical national infrastructure and in an emergent Internet of Things, our safety and security depends on their trustworthy operation. The combination of interconnectivity and the dynamic nature of many cyber-physical systems present new challenges if we are to reduce the risk of cascading or escalating failures. This paper examines the concept of trustworthiness and proposes a definition of a trustworthy system. The paper then reviews availability of methods to examine risk and resilience in complex cyberphysical systems and identifies some areas where further research is needed.