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arXiv · 1210.4838

Interdependent Defense Games: Modeling Interdependent Security under Deliberate Attacks

Hau Chan·Michael Ceyko·Luis E. Ortiz
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Abstract

We propose interdependent defense (IDD) games, a computational game-theoretic framework to study aspects of the interdependence of risk and security in multi-agent systems under deliberate external attacks. Our model builds upon interdependent security (IDS) games, a model due to Heal and Kunreuther that considers the source of the risk to be the result of a fixed randomizedstrategy. We adapt IDS games to model the attacker's deliberate behavior. We define the attacker's pure-strategy space and utility function and derive appropriate cost functions for the defenders. We provide a complete characterization of mixed-strategy Nash equilibria (MSNE), and design a simple polynomial-time algorithm for computing all of them, for an important subclass of IDD games. In addition, we propose a randominstance generator of (general) IDD games based on a version of the real-world Internet-derived Autonomous Systems (AS) graph (with around 27K nodes and 100K edges), and present promising empirical results using a simple learning heuristics to compute (approximate) MSNE in such games.

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Hau Chan, Michael Ceyko, Luis E. Ortiz. 2012-10-16. Interdependent Defense Games: Modeling Interdependent Security under Deliberate Attacks. https://arxiv.org/abs/1210.4838

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