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Applications of blockchain technologies got a lot of attention in recent years. They exceed beyond exchanging value and being a substitute for fiat money and traditional banking system. Nevertheless, being able to exchange value on a…

Cryptography and Security · Computer Science 2019-08-22 Michal Ostapowicz , Kamil Żbikowski

Analyzing and finding anomalies in multi-dimensional datasets is a cumbersome but vital task across different domains. In the context of financial fraud detection, analysts must quickly identify suspicious activity among transactional data.…

Machine Learning · Computer Science 2024-10-29 Beatriz Feliciano , Rita Costa , Jean Alves , Javier Liébana , Diogo Duarte , Pedro Bizarro

Recently, blockchain technology has become a topic in the spotlight but also a hotbed of various cybercrimes. Among them, phishing scams on blockchain have been found making a notable amount of money, thus emerging as a serious threat to…

Social and Information Networks · Computer Science 2021-01-01 Jiajing Wu , Qi Yuan , Dan Lin , Wei You , Weili Chen , Chuan Chen , Zibin Zheng

In recent years, due to the booming development of online social networks, fake news for various commercial and political purposes has been appearing in large numbers and widespread in the online world. With deceptive words, online social…

Social and Information Networks · Computer Science 2019-08-13 Jiawei Zhang , Bowen Dong , Philip S. Yu

Detecting anomalies in data is a vital task, with numerous high-impact applications in areas such as security, finance, health care, and law enforcement. While numerous techniques have been developed in past years for spotting outliers and…

Social and Information Networks · Computer Science 2014-04-29 Leman Akoglu , Hanghang Tong , Danai Koutra

This survey paper categorises, compares, and summarises from almost all published technical and review articles in automated fraud detection within the last 10 years. It defines the professional fraudster, formalises the main types and…

Artificial Intelligence · Computer Science 2019-04-03 Clifton Phua , Vincent Lee , Kate Smith , Ross Gayler

This study explores the use of Generative Adversarial Networks (GANs) to detect AI deepfakes and fraudulent activities in online payment systems. With the growing prevalence of deepfake technology, which can manipulate facial features in…

Machine Learning · Computer Science 2026-01-01 Zong Ke , Shicheng Zhou , Yining Zhou , Chia Hong Chang , Rong Zhang

Modern fraudsters write malicious programs to coordinate a group of accounts to commit collective fraud for illegal profits in online platforms. These programs have access to a set of finite resources - a set of IPs, devices, and accounts…

Cryptography and Security · Computer Science 2021-01-07 Mingxi Wu , Xi Chen

Recently, neural models for information retrieval are becoming increasingly popular. They provide effective approaches for product search due to their competitive advantages in semantic matching. However, it is challenging to use…

Information Retrieval · Computer Science 2019-01-25 Yuan Zhang , Dong Wang , Yan Zhang

Learning to detect fraud in large-scale accounting data is one of the long-standing challenges in financial statement audits or fraud investigations. Nowadays, the majority of applied techniques refer to handcrafted rules derived from known…

Machine Learning · Computer Science 2018-08-02 Marco Schreyer , Timur Sattarov , Damian Borth , Andreas Dengel , Bernd Reimer

The literature on fraud analytics and fraud detection has seen a substantial increase in output in the past decade. This has led to a wide range of research topics and overall little organization of the many aspects of fraud analytical…

Cryptography and Security · Computer Science 2024-07-29 Christopher Bockel-Rickermann , Tim Verdonck , Wouter Verbeke

Credit card fraud imposes significant costs on both cardholders and issuing banks. Fraudsters often disguise their crimes, such as using legitimate transactions through several benign users to bypass anti-fraud detection. Existing graph…

Machine Learning · Computer Science 2025-03-04 Yao Zou , Dawei Cheng

We present a method to detect departures from business-justified workflows among support agents. Our goal is to assist auditors in identifying agent actions that cannot be explained by the activity within their surrounding context, where…

Cryptography and Security · Computer Science 2024-11-06 Birkett Huber , Casper Neo , Keiran Sampson , Alex Kantchelian , Brett Ksobiech , Yanis Pavlidis

Banking fraud causes billion-dollar losses for banks worldwide. In fraud detection, graphs help understand complex transaction patterns and discovering new fraud schemes. This work explores graph patterns in a real-world transaction dataset…

Social and Information Networks · Computer Science 2021-08-11 Xavier Fontes , David Aparício , Maria Inês Silva , Beatriz Malveiro , João Tiago Ascensão , Pedro Bizarro

Fraud review detection is a hot research topic inrecent years. The Cold-start is a particularly new but significant problem referring to the failure of a detection system to recognize the authenticity of a new user. State-of-the-art…

Machine Learning · Computer Science 2020-06-12 Saeedreza Shehnepoor , Roberto Togneri , Wei Liu , Mohammed Bennamoun

Graph generative models become increasingly effective for data distribution approximation and data augmentation. While they have aroused public concerns about their malicious misuses or misinformation broadcasts, just as what Deepfake…

Cryptography and Security · Computer Science 2023-06-14 Yihan Ma , Zhikun Zhang , Ning Yu , Xinlei He , Michael Backes , Yun Shen , Yang Zhang

Fraudulent activity in the financial industry costs billions annually. Detecting fraud, therefore, is an essential yet technically challenging task that requires carefully analyzing large volumes of data. While machine learning (ML)…

Statistical Finance · Quantitative Finance 2025-07-04 Linh Nguyen , Marcel Boersma , Erman Acar

The presence of Super-Apps have changed the way we think about the interactions between users and commerce. It then comes as no surprise that it is also redefining the way banking is done. The paper investigates how different interactions…

Machine Learning · Computer Science 2021-02-22 Luisa Roa , Andrés Rodríguez-Rey , Alejandro Correa-Bahnsen , Carlos Valencia

Review fraud is a pervasive problem in online commerce, in which fraudulent sellers write or purchase fake reviews to manipulate perception of their products and services. Fake reviews are often detected based on several signs, including 1)…

Artificial Intelligence · Computer Science 2018-11-08 Bryan Hooi , Neil Shah , Alex Beutel , Stephan Gunnemann , Leman Akoglu , Mohit Kumar , Disha Makhija , Christos Faloutsos

Market manipulation is tackled through regulation in traditional markets because of its detrimental effect on market efficiency and many participating financial actors. The recent increase of private retail investors due to new low-fee…

Statistical Finance · Quantitative Finance 2021-10-11 Jean-Noël Tuccella , Philip Nadler , Ovidiu Şerban