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The proliferation of digital payment platforms has transformed commerce, offering unmatched convenience and accessibility globally. However, this growth has also attracted malicious actors, leading to a corresponding increase in…

Artificial Intelligence · Computer Science 2026-05-04 Nitish Jaipuria , Lorenzo Gatto , Zijun Kan , Shankey Poddar , Bill Cheung , Diksha Bansal , Ramanan Balakrishnan , Aviral Suri , Jose Estevez

Large Language Models (LLMs) have gained prominence in various applications, including security. This paper explores the utility of LLMs in scam detection, a critical aspect of cybersecurity. Unlike traditional applications, we propose a…

Cryptography and Security · Computer Science 2024-02-06 Liming Jiang

With the rapid growth of e-commerce, online payment fraud has become increasingly complex, posing serious threats to financial security and consumer trust. Traditional detection methods often struggle to capture the intricate relational…

Computational Engineering, Finance, and Science · Computer Science 2025-09-15 RuiHan Luo , Nanxi Wang , Xiaotong Zhu

Large Language Models (LLMs) and generative AI (GenAI) systems, such as ChatGPT, Claude, Gemini, LLaMA, and Copilot (by OpenAI, Anthropic, Google, Meta, and Microsoft, respectively), are reshaping digital platforms and app ecosystems while…

Cryptography and Security · Computer Science 2025-07-29 Kiarash Ahi

User authentication and fraud detection face growing challenges as digital systems expand and adversaries adopt increasingly sophisticated tactics. Traditional knowledge-based authentication remains rigid, requiring exact word-for-word…

Cryptography and Security · Computer Science 2026-04-29 Emunah S-S. Chan , Aldar C-F. Chan

Despite the importance of developing generative AI models that can effectively resist scams, current literature lacks a structured framework for evaluating their vulnerability to such threats. In this work, we address this gap by…

Cryptography and Security · Computer Science 2025-07-18 Udari Madhushani Sehwag , Kelly Patel , Francesca Mosca , Vineeth Ravi , Jessica Staddon

This paper presents a novel approach to e-commerce payment fraud detection by integrating reinforcement learning (RL) with Large Language Models (LLMs). By framing transaction risk as a multi-step Markov Decision Process (MDP), RL optimizes…

Machine Learning · Computer Science 2025-09-24 Bo Qu , Zhurong Wang , Daisuke Yagi , Zhen Xu , Yang Zhao , Yinan Shan , Frank Zahradnik

The recent swift development of LLMs like GPT-4, Gemini, and GPT-3.5 offers a transformative opportunity in medicine and healthcare, especially in digital diagnostics. This study evaluates each model diagnostic abilities by interpreting a…

Computation and Language · Computer Science 2024-05-14 Gaurav Kumar Gupta , Aditi Singh , Sijo Valayakkad Manikandan , Abul Ehtesham

Decentralized Finance (DeFi) smart contracts manage billions of dollars, making them a prime target for exploits. Price manipulation vulnerabilities, often via flash loans, are a devastating class of attacks causing significant financial…

Cryptography and Security · Computer Science 2026-04-30 Lu Liu , Wuqi Zhang , Lili Wei , Hao Guan , Yongqiang Tian , Yepang Liu , Shing-Chi Cheung

E-commerce platforms and payment solution providers face increasingly sophisticated fraud schemes, ranging from identity theft and account takeovers to complex money laundering operations that exploit the speed and anonymity of digital…

Artificial Intelligence · Computer Science 2026-01-12 Cooper Lin , Yanting Zhang , Maohao Ran , Wei Xue , Hongwei Fan , Yibo Xu , Zhenglin Wan , Sirui Han , Yike Guo , Jun Song

Phishing websites remain a significant cybersecurity threat, necessitating accurate and cost-effective detection mechanisms. In this paper, we present CLASP, a novel system that effectively identifies phishing websites by leveraging…

Cryptography and Security · Computer Science 2025-10-22 Fouad Trad , Ali Chehab

This paper provides a systematic analysis of the opportunities, challenges, and potential solutions of harnessing Large Language Models (LLMs) such as GPT-4 to dig out vulnerabilities within smart contracts based on our ongoing research.…

Cryptography and Security · Computer Science 2023-10-18 Sihao Hu , Tiansheng Huang , Fatih İlhan , Selim Furkan Tekin , Ling Liu

The irreversible nature of blockchain transactions makes the identification of smart contract vulnerabilities an essential requirement for secure system development. While Large Language Models (LLMs) are increasingly integrated into…

Cryptography and Security · Computer Science 2026-05-13 Stefan-Claudiu Susan , Andrei Arusoaie , Dorel Lucanu

Decentralized applications (DApps) face significant security risks due to vulnerabilities in smart contracts, with traditional detection methods struggling to address emerging and machine-unauditable flaws. This paper proposes a novel…

Cryptography and Security · Computer Science 2026-02-03 Jiuyang Bu , Wenkai Li , Zongwei Li , Zeng Zhang , Xiaoqi Li

Can we trust Large Language Models (LLMs) to accurately predict scam? This paper investigates the vulnerabilities of LLMs when facing adversarial scam messages for the task of scam detection. We addressed this issue by creating a…

Cryptography and Security · Computer Science 2025-11-05 Chen-Wei Chang , Shailik Sarkar , Shutonu Mitra , Qi Zhang , Hossein Salemi , Hemant Purohit , Fengxiu Zhang , Michin Hong , Jin-Hee Cho , Chang-Tien Lu

Fraud is a prevalent offence that extends beyond financial loss, causing psychological and physical harm to victims. The advancements in online communication technologies alowed for online fraud to thrive in this vast network, with…

Computation and Language · Computer Science 2025-04-17 Antonis Papasavva , Shane Johnson , Ed Lowther , Samantha Lundrigan , Enrico Mariconti , Anna Markovska , Nilufer Tuptuk

The purpose of this study is to assess how large language models (LLMs) can be used for fact-checking and contribute to the broader debate on the use of automated means for veracity identification. To achieve this purpose, we use AI…

Computation and Language · Computer Science 2025-03-12 Elizaveta Kuznetsova , Ilaria Vitulano , Mykola Makhortykh , Martha Stolze , Tomas Nagy , Victoria Vziatysheva

The emergence of Large Language Models (LLMs), including ChatGPT, is having a significant impact on a wide range of fields. While LLMs have been extensively researched for tasks such as code generation and text synthesis, their application…

Cryptography and Security · Computer Science 2025-02-17 Takashi Koide , Naoki Fukushi , Hiroki Nakano , Daiki Chiba

The advent of powerful, accessible Large Language Models (LLMs) like Google's Gemini presents new opportunities for democratizing financial data analysis. This paper documents the design, implementation, and iterative debugging of a novel,…

Software Engineering · Computer Science 2025-07-15 Taniv Ashraf

As cross-chain interoperability advances, decentralized finance (DeFi) protocols enable illicit funds to be reorganized into uniform liquid assets that flow throughout the cryptocurrency market. Such operations can bypass monitoring…

Cryptography and Security · Computer Science 2026-04-15 Shuyi Miao , Wangjie Qiu , Shengda Zhuo , Fei Shen , Dan Lin , Xingtong Yu , Chua Tat-Seng , Zhiming Zheng
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