Learning-Based Simultaneous Detection and Characterization of Time Delay Attack in Cyber-Physical Systems
| Autor: | David K. Y. Yau, Prakhar Ganesh, Yao Chen, Rui Tan, Deming Chen, Marianne Winslett, Xin Lou |
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| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
General Computer Science Automatic Generation Control Computer science business.industry Deep learning Real-time computing Process (computing) Cyber-physical system 020206 networking & telecommunications 02 engineering and technology 020901 industrial engineering & automation Control system 0202 electrical engineering electronic engineering information engineering Key (cryptography) Memory model Artificial intelligence Latency (engineering) business |
| Zdroj: | IEEE Transactions on Smart Grid. 12:3581-3593 |
| ISSN: | 1949-3061 1949-3053 |
| Popis: | Control and communication technologies are key building blocks of cyber-physical systems (CPSes) that can improve the efficiency of the physical processes. However, they also make a CPS vulnerable to cyberattacks that can cause disruptions or even severe damage. This article focuses on one particular type of CPS cyberattack, namely the time delay attack (TDA), which exploits vulnerabilities in the communication channels to cause potentially serious harm to the system. Much work proposed for TDA detection is tested offline only and under strong assumptions. In order to construct a practical solution to deal with real-world scenarios, we propose a deep learning-based method to detect and characterize TDA. Specifically, we design a hierarchical long short-term memory model to process raw data streams from relevant CPS sensors online and continually monitor embedded signals in the data to detect and characterize the attack. Moreover, various strategies of interpreting the outputs of the model are proposed, which allow the user to tune the performance based on different objectives. We evaluate our model on two representative types of CPS, namely power plant control system (PPCS) and automatic generation control (AGC).Code and dataset can be found at: https://github.com/prakharg24/tda For TDA detection, our solution achieves an accuracy of 92% in PPCS, compared with 81% by random forests (RFs) and 72% by k-nearest neighbours (kNNs). For AGC, our solution achieves 98% accuracy, compared with 74% by RFs and 71% by kNNs. It also reduces the mean absolute error in the delay value characterization from about six to two seconds in the PPCS, and from about three seconds to half a second in the AGC, with about 3x to 4x shorter reaction latency in both systems. |
| Databáze: | OpenAIRE |
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