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Dynamic Attack Detection in Cyber-Physical Systems With Side Initial State Information

机译:具有初始状态信息的电子物理系统中的动态攻击检测

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This technical note studies the impact of side initial state information on the detectability of data deception attacks against cyber-physical systems. We assume the attack detector has access to a linear function of the initial system state that cannot be altered by an attacker. First, we provide a necessary and sufficient condition for an attack to be undetectable by any dynamic attack detector under each specific side information pattern. Second, we characterize attacks that can be sustained for arbitrarily long periods without being detected. Third, we define the zero state inducing attack, the only type of attack that remains dynamically undetectable regardless of the side initial state information available to the attack detector. Finally, we design a dynamic attack detector that detects detectable attacks.
机译:本技术说明研究了侧面初始状态信息对针对网络物理系统的数据欺骗攻击的可检测性的影响。我们假设攻击检测器可以访问攻击者无法更改的初始系统状态的线性函数。首先,我们为每个动态辅助检测器在每个特定辅助信息模式下无法检测到的攻击提供了必要和充分的条件。其次,我们将攻击特征定为可以持续很长时间而不会被发现。第三,我们定义了零状态诱导攻击,这是唯一一种动态不可检测的攻击类型,而与攻击检测器可用的侧面初始状态信息无关。最后,我们设计了一种动态攻击检测器,它可以检测可检测到的攻击。

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