Abstract
Resilience and security of infrastructures depend not only on their constituent systems but also on interdependencies among them. This paper studies how these interdependencies in infrastructures affect the defense effort needed to counter external attacks, by formulating a simultaneous game between a service provider (i.e., defender) and an attacker. Effects of interdependencies in three basic topological structures, namely, bus, star and ring, are considered and compared in terms of the game-theoretic defense strategy. Results show that in a star topology, the attacker's and defender's pure strategies at Nash Equilibrium (NE) are sensitive to interdependency levels whereas in a bus structure, the interdependencies show little impact on both defender's and attacker's pure strategies. The sensitivity estimates of defense and attack strategies at NE with respect to target valuation and unit cost are also presented. The results provide insights into infrastructure design and resource allocation for reinforcement of constituent systems.
Original language | English |
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Title of host publication | FUSION 2019 - 22nd International Conference on Information Fusion |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9780996452786 |
State | Published - Jul 2019 |
Event | 22nd International Conference on Information Fusion, FUSION 2019 - Ottawa, Canada Duration: Jul 2 2019 → Jul 5 2019 |
Publication series
Name | FUSION 2019 - 22nd International Conference on Information Fusion |
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Conference
Conference | 22nd International Conference on Information Fusion, FUSION 2019 |
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Country/Territory | Canada |
City | Ottawa |
Period | 07/2/19 → 07/5/19 |
Funding
This work is funded by the Mathematics of Complex, Distributed, Interconnected Systems Program, Office of Advanced Computing Research, U.S. Department of Energy and performed at Oak Ridge National Laboratory managed by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725.