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Graph neural networks (GNNs) have emerged as an effective tool for fraud detection, identifying fraudulent users, and uncovering malicious behaviors. However, attacks against GNN-based fraud detectors and their risks have rarely been…

Machine Learning · Computer Science 2025-04-16 Jinhyeok Choi , Heehyeon Kim , Joyce Jiyoung Whang

The high volume of increasingly sophisticated cyber threats is drawing growing attention to cybersecurity, where many challenges remain unresolved. Namely, for intrusion detection, new algorithms that are more robust, effective, and able to…

Cryptography and Security · Computer Science 2021-11-29 Liyan Chang , Paula Branco

Graph Neural Networks (GNNs) are recognized as potent tools for processing real-world data organized in graph structures. Especially inductive GNNs, which allow for the processing of graph-structured data without relying on predefined graph…

Machine Learning · Computer Science 2024-11-21 Marcin Podhajski , Jan Dubiński , Franziska Boenisch , Adam Dziedzic , Agnieszka Pregowska , Tomasz P. Michalak

Object detection and data association are critical components in multi-object tracking (MOT) systems. Despite the fact that the two components are dependent on each other, prior works often design detection and data association modules…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Yongxin Wang , Kris Kitani , Xinshuo Weng

Botnets are computer networks controlled by malicious actors that present significant cybersecurity challenges. They autonomously infect, propagate, and coordinate to conduct cybercrimes, necessitating robust detection methods. This…

Cryptography and Security · Computer Science 2024-09-04 Rahul Yumlembam , Biju Issac , Seibu Mary Jacob , Longzhi Yang

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

Graph Neural Networks (GNNs) have received extensive research attention for their promising performance in graph machine learning. Despite their extraordinary predictive accuracy, existing approaches, such as GCN and GPRGNN, are not robust…

Machine Learning · Computer Science 2023-01-24 Runlin Lei , Zhen Wang , Yaliang Li , Bolin Ding , Zhewei Wei

Graph Neural Networks (GNNs) have emerged as the dominant approach for machine learning on graph-structured data. However, concerns have arisen regarding the vulnerability of GNNs to small adversarial perturbations. Existing defense methods…

Machine Learning · Computer Science 2024-02-22 Sofiane Ennadir , Yassine Abbahaddou , Johannes F. Lutzeyer , Michalis Vazirgiannis , Henrik Boström

Android, being the most widespread mobile operating systems is increasingly becoming a target for malware. Malicious apps designed to turn mobile devices into bots that may form part of a larger botnet have become quite common, thus posing…

Cryptography and Security · Computer Science 2020-07-02 Suleiman Y. Yerima , Mohammed K. Alzaylaee

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

Mission planning for a fleet of cooperative autonomous drones in applications that involve serving distributed target points, such as disaster response, environmental monitoring, and surveillance, is challenging, especially under partial…

Multiagent Systems · Computer Science 2025-04-14 Michael Elrod , Niloufar Mehrabi , Rahul Amin , Manveen Kaur , Long Cheng , Jim Martin , Abolfazl Razi

Graph-based Neural Networks (GNNs) are recent models created for learning representations of nodes (and graphs), which have achieved promising results when detecting patterns that occur in large-scale data relating different entities. Among…

Machine Learning · Computer Science 2021-08-20 Ronald D. R. Pereira , Fabrício Murai

Graph Neural Networks (GNNs) have drawn significant attentions over the years and been broadly applied to vital fields that require high security standard such as product recommendation and traffic forecasting. Under such scenarios,…

Machine Learning · Computer Science 2022-02-22 Mingxuan Ju , Yujie Fan , Yanfang Ye , Liang Zhao

Graph convolutional networks (GCNs) are currently the most promising paradigm for dealing with graph-structure data, while recent studies have also shown that GCNs are vulnerable to adversarial attacks. Thus developing GCN models that are…

Machine Learning · Computer Science 2023-02-17 Jincheng Huang , Lun Du , Xu Chen , Qiang Fu , Shi Han , Dongmei Zhang

Shortest paths in complex networks play key roles in many applications. Examples include routing packets in a computer network, routing traffic on a transportation network, and inferring semantic distances between concepts on the World Wide…

Social and Information Networks · Computer Science 2021-04-09 Benjamin A. Miller , Zohair Shafi , Wheeler Ruml , Yevgeniy Vorobeychik , Tina Eliassi-Rad , Scott Alfeld

Graph neural networks (GNNs) are increasingly often employed in high-stakes applications, such as fraud detection or healthcare, but are susceptible to adversarial attacks. A number of techniques have been proposed to provide adversarial…

Machine Learning · Computer Science 2026-05-14 Minghao Liu , Chia-Hsuan Lu , Marta Kwiatkowska

Graph neural networks (GNN) have shown significant capabilities in handling structured data, yet their application to dynamic, temporal data remains limited. This paper presents a new type of graph attention network, called TempoKGAT, which…

Machine Learning · Computer Science 2024-12-24 Lena Sasal , Daniel Busby , Abdenour Hadid

Graph neural networks (GNNs) have found widespread application in modeling graph data across diverse domains. While GNNs excel in scenarios where the testing data shares the distribution of their training counterparts (in distribution, ID),…

Machine Learning · Computer Science 2024-01-15 Luzhi Wang , Dongxiao He , He Zhang , Yixin Liu , Wenjie Wang , Shirui Pan , Di Jin , Tat-Seng Chua

Graph neural networks (GNNs) have exhibited superior performance in various classification tasks on graph-structured data. However, they encounter the potential vulnerability from the link stealing attacks, which can infer the presence of a…

Machine Learning · Computer Science 2025-05-14 Jiadong Lou , Xu Yuan , Rui Zhang , Xingliang Yuan , Neil Gong , Nian-Feng Tzeng

Recent years have witnessed the deployment of adversarial attacks to evaluate the robustness of Neural Networks. Past work in this field has relied on traditional optimization algorithms that ignore the inherent structure of the problem and…

Machine Learning · Computer Science 2021-06-01 Florian Jaeckle , M. Pawan Kumar