@inproceedings{ee354be581564a7db34a1c1960c8b573,

title = "On optimal sensor placement for mitigation of vulnerabilities to cyber attacks in large-scale networks",

abstract = "We propose a system theoretic approach to the identification and mitigation of vulnerabilities to cyber attacks, in networks of dynamical systems. Using the controllability and observability gramians, we define a network's vulnerability in terms of the impact of an attack input and the degree of difficulty with which this impact can be detected. In this framework, a network is deemed as vulnerable if it is easy for an attacker to steer it to a certain state and yet such a state is hard to observe through the network's sensing mechanisms. We propose strategies for finding the optimal location of a small number of sensors that minimize the network's vulnerability. Such strategies are obtained as the solution of convex optimization problems, formulated so as to strike a balance between maximal reduction of the system's vulnerability and employing a minimal number of sensors. The utility of the developed framework is demonstrated on a standard IEEE nine bus power system network model.",

keywords = "Convex optimization, large-scale systems, power networks, relaxation, semidefinite programming, sensing strategy, smart grid",

author = "U. Vaidya and M. Fardad",

year = "2013",

doi = "10.23919/ecc.2013.6669723",

language = "English (US)",

isbn = "9783033039629",

series = "2013 European Control Conference, ECC 2013",

publisher = "IEEE Computer Society",

pages = "3548--3553",

booktitle = "2013 European Control Conference, ECC 2013",

address = "United States",

note = "2013 12th European Control Conference, ECC 2013 ; Conference date: 17-07-2013 Through 19-07-2013",

}