Security analysis of control system anomaly detectors
Security analysis of control system anomaly detectors
复制标题
控制系统异常探测器的安全分析
DOI：
10.23919/acc.2017.7963810
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
A. Cárdenas
中科院分区：
文献类型：
--
作者：
David Umsonst;H. Sandberg;A. Cárdenas
分析了用于控制系统的两个异常检测器对恶意数据注入攻击的敏感性。将基于当前残差信号的无状态异常检测器与累积和检测器进行比较。隐形限时数据注入攻击的最坏情况影响通过非凸优化问题来表征两个检测器，并进行比较以确定哪个检测器限制影响最大。我们证明该问题可以通过一组凸优化问题来解决。模拟验证了与无状态异常检测器相比，找到正确的累积和配置对于限制最坏情况的攻击影响至关重要。
Two anomaly detectors for control systems are analyzed with respect to their sensitivity to malicious data injection attacks. A stateless anomaly detector based on the current residual signal is compared to a cumulative sum detector. The worst-case impact of a stealthy time-limited data injection attack is characterized for both detectors by a non-convex optimization problem and compared to determine which detector limits the impact the most. We prove that the problem can be solved by means of a set of convex optimization problems. Simulations verify that finding the right configuration for the cumulative sum is crucial to limit the worst-case attack impact more than with a stateless anomaly detector.