ID:
publications-5426
Type:
Conference paper
Year:
2020
Authors:
Vatn J.
Title:
Cyber-physical threats and real-time monitoring of critical infrastructure
Venue/Journal:
Proceedings of the 29th European Safety and Reliability Conference, ESREL 2019
DOI:
10.3850/978-981-11-2724-3_0668-cd
Research type:
Water System:
Technical Focus:
Abstract:
The society is dependent on a well functioning critical infrastructure. As the critical physical and computational elements of the various infrastructure become more and more intertwined cyber-physical threats have got large attention by infrastructure managers. This paper presents challenges and ways forward in relation to a case study of water network systems. The term cyber-physical systems refers to smart systems that include engineered interacting networks of physical and computational components. The term digital twin refers to a digital replica of physical assets, processes and systems that can be used for various purposes. A characteristic of cyber-physical systems exposed to cyber-physical threats is that most of the time the system is functioning more or less perfect, but in a very small amount of the time these threats can cause large consequences. Seen from the risk managers point of view this calls for a probabilistic approach. A preliminary hazard analysis is often the only systematic analysis that takes a holistic perspective when it comes to identification and follow up of threats and hazards. Since the preliminary hazard analysis as such has no logic to link real time information related to the cyber-physical threats it is required to develop the preliminary hazard analysis to a dynamic follow up tool. A network skeleton is used as basis for a probabilistic model representing the digital twin in relation to the preliminary hazard analysis to provide a real-time risk management tool. Structures are developed that enable the preliminary hazard analysis to dynamically update as cyber-physical threats develops based on readings from e.g., the supervisory control and data acquisition system. A case study is presented to demonstrate the methodological aspects as a basis for challenges in the implementation of a future real-time risk management tool. Β© 2019 European Safety and Reliability Association. Published by Research Publishing, Singapore.
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