An Attack Surface Metric Suitable for Heterogeneous Redundant System with the Voting Mechanism
Liqun Wang, Zheng Zhang, Weichao Li, Zhenwu Liu, Hao Liu · Journal of Physics Conference Series · 2019
With the development of cyberspace security "asymmetry in attack and defense", heterogeneous redundancy design is gradually being widely used. Heterogeneous redundancy design can enhance the robustness and security of the system through the differentiation of heterogeneous components. But the complex structural design of the system makes it difficult to apply the existing attack surface metric to measure the security of heterogeneous redundant system. In this paper, based on the attack surface metric proposed by Manadhata, we provide a new attack surface metric suitable for heterogeneous redundant system with voting mechanism. In this new metric, we define a new notion named attack surface arbitration, and also propose a new method for quantifying result of arbitration. The experiment result shows that the new attack surface metric can properly describe the attack surface of a heterogeneous redundant system with voting mechanism, which changes with the adjustment of voting algorithm.