The introduction of Global Positioning System (GPS) has greatly transformed navigation services; however, GPS remains vulnerable to threats such as spoofing attacks. While machine learning (ML) methods have shown promise in detecting these attacks, they often lack interpretability, causing uncertainty about the reasons for classifying a signal as spoofed. Furthermore, ML methods have typically overlooked the underlying causal relationships among the features, which offer valuable insights for analysis and strategies to mitigate the effects of spoofing attacks. In this paper, we propose using a causality-based Shapley additive explanation method called asymmetric Shapley values (ASV) to understanding why a signal is been detected as spoofed. By employing a deep neural network model, we achieve a high prediction accuracy of 0.993 in identifying spoofing attacks. Crucially, our ASV analysis reveals that disregarding the causal relationships among the feature variables may lead to misleading conclusions regarding the Shapley feature contributions.


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    Title :

    CASAD-GPS: Causal Shapley Additive Explanation for GPS Spoofing Attacks Detection


    Contributors:
    Fan, Zhengyang (author) / Tian, Xin (author) / Pham, Khanh (author) / Blasch, Erik (author) / Wei, Sixiao (author) / Shen, Dan (author) / Chen, Genshe (author)


    Publication date :

    2024-03-02


    Size :

    5519555 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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