Title :
Cyber-physical security via geometric control: Distributed monitoring and malicious attacks
Author :
Pasqualetti, Fabio ; Dorfler, Florian ; Bullo, Francesco
Author_Institution :
Center for Control, Dynamical Syst. & Comput., Univ. of California at Santa Barbara, Santa Barbara, CA, USA
Abstract :
Cyber-physical systems are ubiquitous in power systems, transportation networks, industrial processes, and critical infrastructures. These systems need to operate reliably in the face of unforeseen failures and external malicious attacks. This paper summarizes and extends our results on the security of cyber-physical systems based on geometric control theory: (i) we propose a mathematical framework for cyber-physical systems, attacks, and monitors; (ii) we characterize fundamental monitoring limitations from system-theoretic and graph-theoretic perspectives; and (iii) we design centralized and distributed attack detection and identification monitors. Finally, we design an attack strategy for a group of power generators to physically compromise the functionality of other generators. Novel contributions include a more general framework, the design of novel centralized and distributed identification monitors, and the attack design case study.
Keywords :
centralised control; distributed control; graph theory; power generation control; power system security; security of data; centralized attack detection design; centralized identification monitor design; critical infrastructures; cyber-physical system security; distributed attack detection design; distributed identification monitor design; external malicious attack strategy design; geometric control theory; graph theory; industrial processes; power generator system group attack strategy design; system failures; system theory; transportation networks; Control systems; Control theory; Generators; Monitoring; Noise; Power generation; Security;
Conference_Titel :
Decision and Control (CDC), 2012 IEEE 51st Annual Conference on
Conference_Location :
Maui, HI
Print_ISBN :
978-1-4673-2065-8
Electronic_ISBN :
0743-1546
DOI :
10.1109/CDC.2012.6426257