Model-based Evaluation of the Resilience of Critical Infrastructures under Cyber Attacks

Netkachov, A., Popov, P. T. & Salako, K. (2014). Model-based Evaluation of the Resilience of Critical Infrastructures under Cyber Attacks. Paper presented at the 9th International Conference on Critical Information Infrastructures Security (CRITIS 2014), 13-10-2014 - 15-10-2014, Limassol, Cyprus.

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Abstract

In this paper we report recent results on modelling the impact of cy-ber-attacks on the resilience of complex industrial systems. We use a hybrid model of the system under study in which the accidental failures and the mali-cious behaviour of the Adversary are modelled stochastically, while the conse-quences of failures and attacks are modelled in detail using deterministic mod-els. This modelling approach is demonstrated on a complex case study - a refer-ence power transmission network (NORDIC 32), enhanced with a detailed model of the computer and communication network used for monitoring, pro-tection and control compliant with the international standard IEC 61850. We studied the resilience of the modelled system under different scenarios: i) a base-line scenario in which the modelled system operates in the presence of ac-cidental failures without cyber-attacks; ii) several different scenarios of cyber-attacks. We discuss the usefulness of the modelling approach, of the findings, and outline directions for further work.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: IEC 61850, stochastic modelling, Critical Infrastructures, Power Transmission Network
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: School of Informatics
URI: http://openaccess.city.ac.uk/id/eprint/4361

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