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Backdoor attack is a powerful attack algorithm to deep learning model. Recently, GNN's vulnerability to backdoor attack has been proved especially on graph classification task. In this paper, we propose the first backdoor detection and…

Artificial Intelligence · Computer Science 2022-09-08 Bingchen Jiang , Zhao Li

A cursory reading of the literature suggests that we have made a lot of progress in designing effective adversarial defenses for Graph Neural Networks (GNNs). Yet, the standard methodology has a serious flaw - virtually all of the defenses…

Machine Learning · Computer Science 2023-02-01 Felix Mujkanovic , Simon Geisler , Stephan Günnemann , Aleksandar Bojchevski

Graph Neural Networks (GNNs) have demonstrated commendable performance for graph-structured data. Yet, GNNs are often vulnerable to adversarial structural attacks as embedding generation relies on graph topology. Existing efforts are…

Machine Learning · Computer Science 2024-09-04 Xing Ai , Guanyu Zhu , Yulin Zhu , Yu Zheng , Gaolei Li , Jianhua Li , Kai Zhou

Graph Neural Networks (GNNs) have significantly advanced various downstream graph-relevant tasks, encompassing recommender systems, molecular structure prediction, social media analysis, etc. Despite the boosts of GNN, recent research has…

Machine Learning · Computer Science 2025-01-08 Xiao Yang , Gaolei Li , Jianhua Li

Graph neural networks (GNNs) are becoming the de facto method to learn on the graph data and have achieved the state-of-the-art on node and graph classification tasks. However, recent works show GNNs are vulnerable to training-time…

Machine Learning · Computer Science 2025-03-25 Jiate Li , Meng Pang , Yun Dong , Binghui Wang

Machine learning has been successfully applied to complex network analysis in various areas, and graph neural networks (GNNs) based methods outperform others. Recently, adversarial attack on networks has attracted special attention since…

Social and Information Networks · Computer Science 2019-03-15 Jinyin Chen , Yangyang Wu , Xiang Lin , Qi Xuan

Graph Neural Networks (GNNs) have achieved promising results in tasks such as node classification and graph classification. However, recent studies reveal that GNNs are vulnerable to backdoor attacks, posing a significant threat to their…

Machine Learning · Computer Science 2025-03-13 Zhiwei Zhang , Minhua Lin , Junjie Xu , Zongyu Wu , Enyan Dai , Suhang Wang

Recent studies have shown that graph neural networks (GNNs) are vulnerable to adversarial attacks, posing significant challenges to their deployment in safety-critical scenarios. This vulnerability has spurred a growing focus on designing…

Machine Learning · Computer Science 2025-05-27 Tao Wu , Canyixing Cui , Xingping Xian , Shaojie Qiao , Chao Wang , Lin Yuan , Shui Yu

Graph neural networks (GNNs) are a class of effective deep learning models for node classification tasks; yet their predictive capability may be severely compromised under adversarially designed unnoticeable perturbations to the graph…

Machine Learning · Computer Science 2023-01-05 Xiao Zang , Jie Chen , Bo Yuan

Graph Neural Networks (GNNs) have boosted the performance for many graph-related tasks. Despite the great success, recent studies have shown that GNNs are highly vulnerable to adversarial attacks, where adversaries can mislead the GNNs'…

Machine Learning · Computer Science 2022-11-23 Wenqi Fan , Wei Jin , Xiaorui Liu , Han Xu , Xianfeng Tang , Suhang Wang , Qing Li , Jiliang Tang , Jianping Wang , Charu Aggarwal

In recent years, graph neural networks (GNNs) have shown great potential in addressing various graph structure-related downstream tasks. However, recent studies have found that current GNNs are susceptible to malicious adversarial attacks.…

Machine Learning · Computer Science 2025-04-30 Junyuan Fang , Huimin Liu , Han Yang , Jiajing Wu , Zibin Zheng , Chi K. Tse

Despite its success in the image domain, adversarial training did not (yet) stand out as an effective defense for Graph Neural Networks (GNNs) against graph structure perturbations. In the pursuit of fixing adversarial training (1) we show…

Machine Learning · Computer Science 2023-12-05 Lukas Gosch , Simon Geisler , Daniel Sturm , Bertrand Charpentier , Daniel Zügner , Stephan Günnemann

Graph unlearning, which involves deleting graph elements such as nodes, node labels, and relationships from a trained graph neural network (GNN) model, is crucial for real-world applications where data elements may become irrelevant,…

Machine Learning · Computer Science 2023-02-28 Jiali Cheng , George Dasoulas , Huan He , Chirag Agarwal , Marinka Zitnik

Graph Neural Networks (GNNs) have garnered significant attention from researchers due to their outstanding performance in handling graph-related tasks, such as social network analysis, protein design, and so on. Despite their widespread…

Cryptography and Security · Computer Science 2025-01-03 Xiao Lin , Mingjie Li , Yisen Wang

Graph Neural Networks (GNNs) have gained popularity in numerous domains, yet they are vulnerable to backdoor attacks that can compromise their performance and ethical application. The detection of these attacks is crucial for maintaining…

Machine Learning · Computer Science 2026-05-12 Jane Downer , Ren Wang , Binghui Wang

Graph Neural Networks (GNNs) have gained significant attention owing to their ability to handle graph-structured data and the improvement in practical applications. However, many of these models prioritize high utility performance, such as…

Machine Learning · Computer Science 2023-09-20 Yi Zhang , Yuying Zhao , Zhaoqing Li , Xueqi Cheng , Yu Wang , Olivera Kotevska , Philip S. Yu , Tyler Derr

Graph neural networks (GNNs) have attracted increasing interests. With broad deployments of GNNs in real-world applications, there is an urgent need for understanding the robustness of GNNs under adversarial attacks, especially in realistic…

Machine Learning · Computer Science 2021-06-22 Jiaqi Ma , Junwei Deng , Qiaozhu Mei

Graph neural networks (GNNs) have recently gained much attention for node and graph classification tasks on graph-structured data. However, multiple recent works showed that an attacker can easily make GNNs predict incorrectly via…

Cryptography and Security · Computer Science 2021-07-19 Binghui Wang , Jinyuan Jia , Xiaoyu Cao , Neil Zhenqiang Gong

Graph neural networks (GNNs) are widely used for learning from graph-structured data in domains such as social networks, recommender systems, and financial platforms. To comply with privacy regulations like the GDPR, CCPA, and PIPEDA,…

Machine Learning · Computer Science 2026-03-20 Jiahao Zhang , Yilong Wang , Suhang Wang

The emergence of Graph Neural Networks (GNNs) in graph data analysis and their deployment on Machine Learning as a Service platforms have raised critical concerns about data misuse during model training. This situation is further…

Machine Learning · Computer Science 2023-12-14 Bang Wu , He Zhang , Xiangwen Yang , Shuo Wang , Minhui Xue , Shirui Pan , Xingliang Yuan