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Vulnerability identification is crucial to protect the software systems from attacks for cyber security. It is especially important to localize the vulnerable functions among the source code to facilitate the fix. However, it is a…

Software Engineering · Computer Science 2019-09-10 Yaqin Zhou , Shangqing Liu , Jingkai Siow , Xiaoning Du , Yang Liu

Graph-based anomaly detection is pivotal in diverse security applications, such as fraud detection in transaction networks and intrusion detection for network traffic. Standard approaches, including Graph Neural Networks (GNNs), often…

Cryptography and Security · Computer Science 2024-10-14 Andy Zhou , Xiaojun Xu , Ramesh Raghunathan , Alok Lal , Xinze Guan , Bin Yu , Bo Li

Benefiting from the message passing mechanism, Graph Neural Networks (GNNs) have been successful on flourish tasks over graph data. However, recent studies have shown that attackers can catastrophically degrade the performance of GNNs by…

Machine Learning · Computer Science 2023-04-24 Kuan Li , Yang Liu , Xiang Ao , Jianfeng Chi , Jinghua Feng , Hao Yang , Qing He

When facing graph signal processing tasks, the workhorse assumption is that the graph describing the support of the signals is known. However, in many relevant applications the available graph suffers from observation errors and…

Signal Processing · Electrical Eng. & Systems 2024-12-03 Samuel Rey , Victor M. Tenorio , Antonio G. Marques

Graph Neural Networks (GNNs) have become indispensable tools for learning from graph structured data, catering to various applications such as social network analysis and fraud detection for financial services. At the heart of these…

Cryptography and Security · Computer Science 2025-06-02 Zeyu Song , Ehsanul Kabir , Shagufta Mehnaz

Graph is an important data representation ubiquitously existing in the real world. However, analyzing the graph data is computationally difficult due to its non-Euclidean nature. Graph embedding is a powerful tool to solve the graph…

Cryptography and Security · Computer Science 2021-10-07 Zhikun Zhang , Min Chen , Michael Backes , Yun Shen , Yang Zhang

Explainable fake news detection aims to assess the veracity of news claims while providing human-friendly explanations. Existing methods incorporating investigative journalism are often inefficient and struggle with breaking news. Recent…

Computation and Language · Computer Science 2026-04-09 Bo Wang , Jing Ma , Hongzhan Lin , Zhiwei Yang , Ruichao Yang , Yuan Tian , Yi Chang

Graph Neural Networks (GNNs) have emerged as powerful models for learning from graph-structured data. However, their widespread adoption has raised serious privacy concerns. While prior research has primarily focused on edge-level privacy,…

Machine Learning · Computer Science 2025-11-12 Jie Fu , Yuan Hong , Zhili Chen , Wendy Hui Wang

Recent research in both academia and industry has validated the effectiveness of provenance graph-based detection for advanced cyber attack detection and investigation. However, analyzing large-scale provenance graphs often results in…

Cryptography and Security · Computer Science 2024-07-11 Zhenyuan Li , Yangyang Wei , Xiangmin Shen , Lingzhi Wang , Yan Chen , Haitao Xu , Shouling Ji , Fan Zhang , Liang Hou , Wenmao Liu , Xuhong Zhang , Jianwei Ying

As post hoc explanations are increasingly used to understand the behavior of graph neural networks (GNNs), it becomes crucial to evaluate the quality and reliability of GNN explanations. However, assessing the quality of GNN explanations is…

Machine Learning · Computer Science 2023-01-18 Chirag Agarwal , Owen Queen , Himabindu Lakkaraju , Marinka Zitnik

Endpoint Detection and Response (EDR) solutions embrace the method of attack provenance graph to discover unknown threats through system event correlation. However, this method still faces some unsolved problems in the fields of…

Cryptography and Security · Computer Science 2026-02-18 Peilun Wu , Nan Sun , Nour Moustafa , Youyang Qu , Ming Ding

Generalization of machine learning models can be severely compromised by data poisoning, where adversarial changes are applied to the training data. This vulnerability has led to interest in certifying (i.e., proving) that such changes up…

Machine Learning · Computer Science 2025-07-16 Lukas Gosch , Mahalakshmi Sabanayagam , Debarghya Ghoshdastidar , Stephan Günnemann

With the rapid deployment of graph neural networks (GNNs) based techniques into a wide range of applications such as link prediction, node classification, and graph classification the explainability of GNNs has become an indispensable…

Machine Learning · Computer Science 2023-01-03 Yiqiao Li , Jianlong Zhou , Boyuan Zheng , Fang Chen

Explaining Graph Neural Networks (GNNs) has garnered significant attention due to the need for interpretability, enabling users to understand the behavior of these black-box models better and extract valuable insights from their…

Machine Learning · Computer Science 2025-06-03 Jiaxing Zhang , Xiaoou Liu , Dongsheng Luo , Hua Wei

Graph Neural Networks(GNNs) are vulnerable to backdoor attacks, where adversaries implant malicious triggers to manipulate model predictions. Existing trigger generators are often simplistic in structure and overly reliant on specific…

Cryptography and Security · Computer Science 2026-05-06 Dongyi Liu , Jiangtong Li

Many data mining tasks rely on graphs to model relational structures among individuals (nodes). Since relational data are often sensitive, there is an urgent need to evaluate the privacy risks in graph data. One famous privacy attack…

Machine Learning · Computer Science 2022-09-20 Zaixi Zhang , Qi Liu , Zhenya Huang , Hao Wang , Chee-Kong Lee , Enhong Chen

Graph Neural Networks (GNNs) have achieved state-of-the-art performance in various graph structure related tasks such as node classification and graph classification. However, GNNs are vulnerable to adversarial attacks. Existing works…

Machine Learning · Computer Science 2021-09-28 Jiaming Mu , Binghui Wang , Qi Li , Kun Sun , Mingwei Xu , Zhuotao Liu

Graph Neural Networks (GNNs) have garnered intensive attention for Network Intrusion Detection System (NIDS) due to their suitability for representing the network traffic flows. However, most present GNN-based methods for NIDS are…

Machine Learning · Computer Science 2024-03-05 Renjie Xu , Guangwei Wu , Weiping Wang , Xing Gao , An He , Zhengpeng Zhang

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

Graph-structured data is ubiquitous in today's connected world, driving extensive research in graph analysis. Graph Neural Networks (GNNs) have shown great success in this field, leading to growing interest in developing fair GNNs for…

Machine Learning · Computer Science 2024-12-16 Xuemin Wang , Tianlong Gu , Xuguang Bao , Liang Chang