Problem space structural adversarial attacks for Network Intrusion Detection Systems based on Graph Neural Networks

• URL: http://arxiv.org/abs/2403.11830v2
• Date: Tue, 23 Apr 2024 15:21:04 GMT
• Title: Problem space structural adversarial attacks for Network Intrusion Detection Systems based on Graph Neural Networks
• Authors: Andrea Venturi, Dario Stabili, Mirco Marchetti,
• Abstract summary: We propose the first formalization of adversarial attacks specifically tailored for GNN in network intrusion detection. We outline and model the problem space constraints that attackers need to consider to carry out feasible structural attacks in real-world scenarios. Our findings demonstrate the increased robustness of the models against classical feature-based adversarial attacks.
• Score: 8.629862888374243
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Machine Learning (ML) algorithms have become increasingly popular for supporting Network Intrusion Detection Systems (NIDS). Nevertheless, extensive research has shown their vulnerability to adversarial attacks, which involve subtle perturbations to the inputs of the models aimed at compromising their performance. Recent proposals have effectively leveraged Graph Neural Networks (GNN) to produce predictions based also on the structural patterns exhibited by intrusions to enhance the detection robustness. However, the adoption of GNN-based NIDS introduces new types of risks. In this paper, we propose the first formalization of adversarial attacks specifically tailored for GNN in network intrusion detection. Moreover, we outline and model the problem space constraints that attackers need to consider to carry out feasible structural attacks in real-world scenarios. As a final contribution, we conduct an extensive experimental campaign in which we launch the proposed attacks against state-of-the-art GNN-based NIDS. Our findings demonstrate the increased robustness of the models against classical feature-based adversarial attacks, while highlighting their susceptibility to structure-based attacks.

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