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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…

机器学习 · 计算机科学 2025-04-16 Jinhyeok Choi , Heehyeon Kim , Joyce Jiyoung Whang

Handling faults is a growing concern in HPC. In future exascale systems, it is projected that silent undetected errors will occur several times a day, increasing the occurrence of corrupted results. In this article, we propose SEDAR, which…

分布式、并行与集群计算 · 计算机科学 2020-07-29 Diego Montezanti , Enzo Rucci , Armando De Giusti , Marcelo Naiouf , Dolores Rexachs , Emilio Luque

Techniques for verifying or invalidating the security of computer systems have come a long way in recent years. Extremely sophisticated tools are available to specify and formally verify the behavior of a system and, at the same time,…

密码学与安全 · 计算机科学 2024-04-16 Matteo Busi , Riccardo Focardi , Flaminia Luccio

Supply chain disruptions constitute an often underestimated risk for financial stability. As in financial networks, systemic risks in production networks arises when the local failure of one firm impacts the production of others and might…

统计金融 · 定量金融 2025-02-25 Jan Fialkowski , Christian Diem , András Borsos , Stefan Thurner

Drawing on recent contributions inferring financial interconnectedness from market data, our paper provides new insights on the evolution of the US financial industry over a long period of time by using several tools coming from network…

物理与社会 · 物理学 2018-07-04 Yérali Gandica , Marco Valerio Geraci , Sophie Béreau , Jean-Yves Gnabo

Along with the rapid evolution of mobile communication technologies, such as 5G, there has been a drastically increase in telecom fraud, which significantly dissipates individual fortune and social wealth. In recent years, graph mining…

机器学习 · 计算机科学 2023-03-31 Xinxin Hu , Haotian Chen , Junjie Zhang , Hongchang Chen , Shuxin Liu , Xing Li , Yahui Wang , Xiangyang Xue

Real-time fraud detection is a challenge for most financial and electronic commercial platforms. To identify fraudulent communities, Grab, one of the largest technology companies in Southeast Asia, forms a graph from a set of transactions…

数据库 · 计算机科学 2022-11-15 Jiaxin Jiang , Yuan Li , Bingsheng He , Bryan Hooi , Jia Chen , Johan Kok Zhi Kang

In this paper, we assess how the stability of financial networks is affected by interconnectedness considering its tiniest variation: the edge. We compute the impact of edges as the percentage difference in the systemic risk (SR) of the…

统计力学 · 物理学 2025-10-06 Michel Alexandre , Thiago Christiano Silva , Francisco A. Rodrigues

The insurance industry has been creating innovative products around the emerging online shopping activities. Such e-commerce insurance is designed to protect buyers from potential risks such as impulse purchases and counterfeits. Fraudulent…

密码学与安全 · 计算机科学 2020-03-13 Cen Chen , Chen Liang , Jianbin Lin , Li Wang , Ziqi Liu , Xinxing Yang , Xiukun Wang , Jun Zhou , Yang Shuang , Yuan Qi

Financial fraud is always a major problem in the field of finance, as it can cause significant consequences. As a result, many approaches have been designed to detect it, and lately Graph Neural Networks (GNNs) have been demonstrated as a…

机器学习 · 计算机科学 2026-01-13 Hoang Hiep Trieu

Detecting vulnerabilities in source code is a critical task for software security assurance. Graph Neural Network (GNN) machine learning can be a promising approach by modeling source code as graphs. Early approaches treated code elements…

密码学与安全 · 计算机科学 2025-02-25 Yu Luo , Weifeng Xu , Dianxiang Xu

Transaction graphs, which represent financial and trade transactions between entities such as bank accounts and companies, can reveal patterns indicative of financial crimes like money laundering and fraud. However, effective detection of…

机器学习 · 计算机科学 2025-03-24 Steve Gounoue , Ashutosh Sao , Simon Gottschalk

Since the emergence of joint-stock companies, financial fraud by listed firms has repeatedly undermined capital markets. Fraud is difficult to detect because of covert tactics and the high labor and time costs of audits. Traditional…

机器学习 · 计算机科学 2025-12-11 Xiao Li

Credit card fraud causes significant financial losses and frequently occurs as fraud attack, defined as short-term sequence of fraudulent transactions associated with high transaction rates and amounts, business areas historically tied to…

最优化与控制 · 数学 2025-03-27 Alexander Stotsky

Identifying influential nodes and edges in directed networks remains a fundamental challenge across domains from social influence to biological regulation. Most existing centrality measures face a critical limitation: they either discard…

Graph Neural Networks (GNNs) have been widely applied to different tasks such as bioinformatics, drug design, and social networks. However, recent studies have shown that GNNs are vulnerable to adversarial attacks which aim to mislead the…

机器学习 · 计算机科学 2022-12-29 Xiaojun Xu , Yue Yu , Hanzhang Wang , Alok Lal , Carl A. Gunter , Bo Li

Predicting the bankruptcy risk of small and medium-sized enterprises (SMEs) is an important step for financial institutions when making decisions about loans. Existing studies in both finance and AI research fields, however, tend to only…

风险管理 · 定量金融 2024-01-10 Yu Zhao , Shaopeng Wei , Yu Guo , Qing Yang , Xingyan Chen , Qing Li , Fuzhen Zhuang , Ji Liu , Gang Kou

Financial frauds cause billions of losses annually and yet it lacks efficient approaches in detecting frauds considering user profile and their behaviors simultaneously in social network . A social network forms a graph structure whilst…

社会与信息网络 · 计算机科学 2023-03-28 Hanyi Hu , Long Zhang , Shuan Li , Zhi Liu , Yao Yang , Chongning Na

Collaborative fraud, where multiple fraudulent accounts coordinate to exploit online payment systems, poses significant challenges due to the formation of complex network structures. Traditional detection methods that rely solely on…

机器学习 · 计算机科学 2025-12-23 Chi Liu

Cross-border insider threats pose a critical challenge to government financial schemes, particularly when dealing with distributed, privacy-sensitive data across multiple jurisdictions. Existing approaches face fundamental limitations: they…

密码学与安全 · 计算机科学 2026-02-19 Srikumar Nayak , James Walmesley