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Money laundering has become one of the most relevant criminal activities in modern societies, as it causes massive financial losses for governments, banks and other institutions. Detecting such activities is among the top priorities when it…

Global illicit fund flows exceed an estimated $3.1 trillion annually, with stablecoins emerging as a preferred laundering medium due to their liquidity. While decentralized protocols increasingly adopt zero-knowledge proofs to obfuscate…

Cryptography and Security · Computer Science 2026-02-23 Luciano Juvinski , Haochen Li , Alessio Brini

Anti-money laundering (AML) systems are important for protecting the global economy. However, conventional rule-based methods rely on domain knowledge, leading to suboptimal accuracy and a lack of scalability. Graph neural networks (GNNs)…

Machine Learning · Computer Science 2026-03-26 Chung-Hoo Poon , James Kwok , Calvin Chow , Jang-Hyeon Choi

Given a stream of money transactions between accounts in a bank, how can we accurately detect money laundering agent accounts and suspected behaviors in real-time? Money laundering agents try to hide the origin of illegally obtained money…

Social and Information Networks · Computer Science 2022-01-26 Xiaobing Sun , Wenjie Feng , Shenghua Liu , Yuyang Xie , Siddharth Bhatia , Bryan Hooi , Wenhan Wang , Xueqi Cheng

For different factors/reasons, ranging from inherent characteristics and features providing decentralization, enhanced privacy, ease of transactions, etc., to implied external hardships in enforcing regulations, contradictions in data…

Cryptography and Security · Computer Science 2025-01-03 Dinesh Srivasthav P , Manoj Apte

This paper is motivated by the task of detecting anomalies in networks of financial transactions, with accounts as nodes and a directed weighted edge between two nodes denoting a money transfer. The weight of the edge is the transaction…

Applications · Statistics 2019-05-28 Andrew Elliott , Mihai Cucuringu , Milton Martinez Luaces , Paul Reidy , Gesine Reinert

Subgraph representation learning is a technique for analyzing local structures (or shapes) within complex networks. Enabled by recent developments in scalable Graph Neural Networks (GNNs), this approach encodes relational information at a…

Machine Learning · Computer Science 2024-07-30 Claudio Bellei , Muhua Xu , Ross Phillips , Tom Robinson , Mark Weber , Tim Kaler , Charles E. Leiserson , Arvind , Jie Chen

Conventional anti-money laundering (AML) systems predominantly focus on identifying anomalous entities or transactions, flagging them for manual investigation based on statistical deviation or suspicious behavior. This paradigm, however,…

Social and Information Networks · Computer Science 2025-07-16 Danny Butvinik , Ofir Yakobi , Michal Einhorn Cohen , Elina Maliarsky

Money laundering enables organized crime by moving illicit funds into the legitimate economy. Although trillions of dollars are laundered each year, detection rates remain low because launderers evade oversight, confirmed cases are rare,…

Social and Information Networks · Computer Science 2025-09-26 Johan Östman , Edvin Callisen , Anton Chen , Kristiina Ausmees , Emanuel Gårdh , Jovan Zamac , Jolanta Goldsteine , Hugo Wefer , Simon Whelan , Markus Reimegård

Anti-money laundering (AML) regulations mandate financial institutions to deploy AML systems based on a set of rules that, when triggered, form the basis of a suspicious alert to be assessed by human analysts. Reviewing these cases is a…

Machine Learning · Computer Science 2022-10-28 Mário Cardoso , Pedro Saleiro , Pedro Bizarro

The complexity and interconnectivity of entities involved in money laundering demand investigative reasoning over graph-structured data. This paper explores the use of large language models (LLMs) as reasoning engines over localized…

Machine Learning · Computer Science 2026-05-12 Erfan Pirmorad

The widespread of Online Social Networks and the opportunity to commercialize popular accounts have attracted a large number of automated programs, known as artificial accounts. This paper focuses on the classification of human and fake…

Social and Information Networks · Computer Science 2021-09-17 Ilia Karpov , Ekaterina Glazkova

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

Money laundering presents a persistent challenge for financial institutions worldwide, while criminal organizations constantly evolve their tactics to bypass detection systems. Traditional anti-money laundering approaches mainly rely on…

Machine Learning · Computer Science 2026-04-06 Haseeb Tariq , Marwan Hassani

Understanding non-linear relationships among financial instruments has various applications in investment processes ranging from risk management, portfolio construction and trading strategies. Here, we focus on interconnectedness among…

Computational Finance · Quantitative Finance 2022-07-18 Bhaskarjit Sarmah , Nayana Nair , Dhagash Mehta , Stefano Pasquali

Money laundering (ML) is the behavior to conceal the source of money achieved by illegitimate activities, and always be a fast process involving frequent and chained transactions. How can we detect ML and fraudulent activity in large scale…

Computers and Society · Computer Science 2021-03-24 Xiaobing Sun , Jiabao Zhang , Qiming Zhao , Shenghua Liu , Jinglei Chen , Ruoyu Zhuang , Huawei Shen , Xueqi Cheng

Graph embedding is a transformation of nodes of a graph into a set of vectors. A~good embedding should capture the graph topology, node-to-node relationship, and other relevant information about the graph, its subgraphs, and nodes. If these…

Social and Information Networks · Computer Science 2022-06-22 Arash Dehghan-Kooshkghazi , Bogumił Kamiński , Łukasz Kraiński , Paweł Prałat , François Théberge

Although the automation and digitisation of anti-financial crime investigation has made significant progress in recent years, detecting insider trading remains a unique challenge, partly due to the limited availability of labelled data. To…

Social and Information Networks · Computer Science 2025-12-23 Gian Jaeger , Wang Ngai Yeung , Renaud Lambiotte

Every year, criminals launder billions of dollars acquired from serious felonies (e.g., terrorism, drug smuggling, or human trafficking) harming countless people and economies. Cryptocurrencies, in particular, have developed as a haven for…

Machine Learning · Computer Science 2021-10-06 Joana Lorenz , Maria Inês Silva , David Aparício , João Tiago Ascensão , Pedro Bizarro

The use of cryptocurrencies has led to an increase in illicit activities such as money laundering, with traditional rule-based approaches becoming less effective in detecting and preventing such activities. In this paper, we propose a novel…

Machine Learning · Computer Science 2024-10-10 Hrushyang Adloori , Vaishnavi Dasanapu , Abhijith Chandra Mergu