Journal article

Security metrics and synthesis of secure control systems

C Murguia, I Shames, J Ruths, D Nešić

Automatica | Elsevier Inc. | Published : 2020

Abstract

The term stealthy has come to encompass a variety of techniques that attackers can employ to avoid being detected. In this manuscript, for a class of perturbed linear time-invariant systems, we propose two security metrics to quantify the potential impact that stealthy attacks could have on the system dynamics by tampering with sensor measurements. We provide analysis tools to quantify these metrics for given system dynamics, control, and system monitor. Then, we provide synthesis tools (in terms of semidefinite programs) to redesign controllers and monitors such that the impact of stealthy attacks is minimized and the required attack-free system performance is guaranteed.

Grants

Awarded by Australian Research Council (ARC)


Awarded by NATO Science for Peace and Security (SPS) PROGRAMME


Funding Acknowledgements

This work was supported by the Australian Research Council (ARC) under the Project DP170104099; and the NATO Science for Peace and Security (SPS) PROGRAMME under the project SPS.SFP G5479. The material in this paper was not presented at any conference. This paper was recommended for publication in revised form by Associate Editor Vijay Gupta under the direction of Editor Christos G. Cassandras.