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Graph Neural Networks (GNNs) have demonstrated significant application potential in various fields. However, GNNs are still vulnerable to adversarial attacks. Numerous adversarial defense methods on GNNs are proposed to address the problem…

Social and Information Networks · Computer Science 2024-06-21 Tao Wu , Xinwen Cao , Chao Wang , Shaojie Qiao , Xingping Xian , Lin Yuan , Canyixing Cui , Yanbing Liu

Adversarial attacks to graph analytics are gaining increased attention. To date, two lines of countermeasures have been proposed to resist various graph adversarial attacks from the perspectives of either graph per se or graph neural…

Machine Learning · Computer Science 2025-05-21 Xinxin Fan , Wenxiong Chen , Mengfan Li , Wenqi Wei , Ling Liu

Graph neural networks (GNN) have been widely deployed in real-world networked applications and systems due to their capability to handle graph-structured data. However, the growing awareness of data privacy severely challenges the…

Machine Learning · Computer Science 2024-02-20 Qiying Pan , Yifei Zhu , Lingyang Chu

Graph neural networks frequently encounter significant performance degradation when confronted with structural noise or non-homophilous topologies. To address these systemic vulnerabilities, we present AdvSynGNN, a comprehensive…

Machine Learning · Computer Science 2026-04-14 Rong Fu , Muge Qi , Chunlei Meng , Shuo Yin , Kun Liu , Zhaolu Kang , Simon Fong

Graph Neural Networks (GNNs) excel at handling graph data but remain vulnerable to adversarial attacks. Existing defense methods typically rely on assumptions like graph sparsity and homophily to either preprocess the graph or guide…

Machine Learning · Computer Science 2024-10-17 Kaiwen Xia , Huijun Wu , Duanyu Li , Min Xie , Ruibo Wang , Wenzhe Zhang

With the great popularity of Graph Neural Networks (GNNs), their robustness to adversarial topology attacks has received significant attention. Although many attack methods have been proposed, they mainly focus on fixed-budget attacks,…

Artificial Intelligence · Computer Science 2024-03-06 Mengmei Zhang , Xiao Wang , Chuan Shi , Lingjuan Lyu , Tianchi Yang , Junping Du

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

A graph neural network (GNN) is a type of neural network that is specifically designed to process graph-structured data. Typically, GNNs can be implemented in two settings, including the transductive setting and the inductive setting. In…

Cryptography and Security · Computer Science 2024-05-10 Yixin Wu , Xinlei He , Pascal Berrang , Mathias Humbert , Michael Backes , Neil Zhenqiang Gong , Yang Zhang

Graph Neural Networks (GNNs) have demonstrated remarkable performance across a spectrum of graph-related tasks, however concerns persist regarding their vulnerability to adversarial perturbations. While prevailing defense strategies focus…

Machine Learning · Computer Science 2025-10-28 Sofiane Ennadir , Johannes F. Lutzeyer , Michalis Vazirgiannis , El Houcine Bergou

Graph Neural Networks (GNNs) have shown superior performance in analyzing attributed networks in various web-based applications such as social recommendation and web search. Nevertheless, in high-stake decision-making scenarios such as…

Machine Learning · Computer Science 2022-02-22 Yushun Dong , Ninghao Liu , Brian Jalaian , Jundong Li

Modern enterprise networks increasingly rely on Active Directory (AD) for identity and access management. However, this centralization exposes a single point of failure, allowing adversaries to compromise high-value assets. Existing AD…

Cryptography and Security · Computer Science 2025-10-21 Diksha Goel , Hussain Ahmad , Kristen Moore , Mingyu Guo

The adversarial robustness of Graph Neural Networks (GNNs) has been questioned due to the false sense of security uncovered by strong adaptive attacks despite the existence of numerous defenses. In this work, we delve into the robustness…

Machine Learning · Computer Science 2024-11-12 Zhichao Hou , Ruiqi Feng , Tyler Derr , Xiaorui Liu

Graph Neural Networks (GNNs) have demonstrated state-of-the-art performance in various graph representation learning tasks. Recently, studies revealed their vulnerability to adversarial attacks. In this work, we theoretically define the…

Machine Learning · Computer Science 2024-04-30 Yassine Abbahaddou , Sofiane Ennadir , Johannes F. Lutzeyer , Michalis Vazirgiannis , Henrik Boström

Adversarial attacks present a significant risk to the integrity and performance of graph neural networks, particularly in tasks where graph structure and node features are vulnerable to manipulation. In this paper, we present a novel model,…

Machine Learning · Computer Science 2025-11-04 Shakib Khan , A. Ben Hamza , Amr Youssef

Graph Neural Networks (GNNs) have enjoyed wide spread applications in graph-structured data. However, existing graph based applications commonly lack annotated data. GNNs are required to learn latent patterns from a limited amount of…

Machine Learning · Computer Science 2023-03-22 Wenqi Wei , Mu Qiao , Divyesh Jadav

Node representation learning has demonstrated its efficacy for various applications on graphs, which leads to increasing attention towards the area. However, fairness is a largely under-explored territory within the field, which may lead to…

Machine Learning · Computer Science 2022-01-24 O. Deniz Kose , Yanning Shen

Graphs are commonly used to model complex networks prevalent in modern social media and literacy applications. Our research investigates the vulnerability of these graphs through the application of feature based adversarial attacks,…

Social and Information Networks · Computer Science 2024-03-06 Ying Xu , Michael Lanier , Anindya Sarkar , Yevgeniy Vorobeychik

Graph classification is crucial in network analyses. Networks face potential security threats, such as adversarial attacks. Some defense methods may trade off the algorithm complexity for robustness, such as adversarial training, whereas…

Machine Learning · Computer Science 2023-02-07 Jinyin Chen , Haiyang Xiong , Haibin Zhenga , Dunjie Zhang , Jian Zhang , Mingwei Jia , Yi Liu

Recent studies have revealed that GNNs are highly susceptible to multiple adversarial attacks. Among these, graph backdoor attacks pose one of the most prominent threats, where attackers cause models to misclassify by learning the…

Cryptography and Security · Computer Science 2024-10-21 Hao Sui , Bing Chen , Jiale Zhang , Chengcheng Zhu , Di Wu , Qinghua Lu , Guodong Long

Graph neural networks (GNNs) offer promising learning methods for graph-related tasks. However, GNNs are at risk of adversarial attacks. Two primary limitations of the current evasion attack methods are highlighted: (1) The current…

Machine Learning · Computer Science 2023-02-08 He Zhang , Xingliang Yuan , Chuan Zhou , Shirui Pan