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Smart Contracts (SCs) in Ethereum can automate tasks and provide different functionalities to a user. Such automation is enabled by the `Turing-complete' nature of the programming language (Solidity) in which SCs are written. This also…

Cryptography and Security · Computer Science 2021-06-28 Rachit Agarwal , Tanmay Thapliyal , Sandeep Kumar Shukla

Poorly designed smart contracts are particularly vulnerable, as they may allow attackers to exploit weaknesses and steal the virtual currency they manage. In this study, we train a model using unsupervised learning to identify…

Cryptography and Security · Computer Science 2025-04-15 Hong-Sheng Huang , Jen-Yi Ho , Hao-Wen Chen , Hung-Min Sun

This paper presents VulnSense framework, a comprehensive approach to efficiently detect vulnerabilities in Ethereum smart contracts using a multimodal learning approach on graph-based and natural language processing (NLP) models. Our…

Cryptography and Security · Computer Science 2023-09-18 Phan The Duy , Nghi Hoang Khoa , Nguyen Huu Quyen , Le Cong Trinh , Vu Trung Kien , Trinh Minh Hoang , Van-Hau Pham

With the development of blockchain technology, more and more attention has been paid to the intersection of blockchain and education, and various educational evaluation systems and E-learning systems are developed based on blockchain…

Cryptography and Security · Computer Science 2023-03-09 Zhifeng Wang , Wanxuan Wu , Chunyan Zeng , Jialong Yao , Yang Yang , Hongmin Xu

Smart contracts are central to a myriad of critical blockchain applications, from financial transactions to supply chain management. However, their adoption is hindered by security vulnerabilities that can result in significant financial…

Cryptography and Security · Computer Science 2025-09-30 Dalila Ressi , Alvise Spanò , Lorenzo Benetollo , Carla Piazza , Michele Bugliesi , Sabina Rossi

Symbolic analysis of security exploits in smart contracts has demonstrated to be valuable for analyzing predefined vulnerability properties. While some symbolic tools perform complex analysis steps, they require a predetermined invocation…

Cryptography and Security · Computer Science 2019-06-10 Wesley Joon-Wie Tann , Xing Jie Han , Sourav Sen Gupta , Yew-Soon Ong

The rapid growth of Ethereum has made it more important to quickly and accurately detect smart contract vulnerabilities. While machine-learning-based methods have shown some promise, many still rely on rule-based preprocessing designed by…

Cryptography and Security · Computer Science 2025-12-15 Uisang Lee , Changhoon Chung , Junmo Lee , Soo-Mook Moon

Modern blockchain, such as Ethereum, supports the deployment and execution of so-called smart contracts, autonomous digital programs with significant value of cryptocurrency. Executing smart contracts requires gas costs paid by users, which…

Emerging Technologies · Computer Science 2024-06-25 Majd Soud , Waltteri Nuutinen , Grischa Liebel

Ethereum has become a widely used platform to enable secure, Blockchain-based financial and business transactions. However, many identified bugs and vulnerabilities in smart contracts have led to serious financial losses, which raises…

Software Engineering · Computer Science 2021-07-06 Zhipeng Gao

With the escalating prevalence of malicious activities exploiting vulnerabilities in blockchain systems, there is an urgent requirement for robust attack detection mechanisms. To address this challenge, this paper presents a novel…

Ethereum smart contracts are executable programs deployed on a blockchain. Once deployed, they cannot be updated due to their inherent immutability. Moreover, they often manage valuable assets that are worth millions of dollars, making them…

Cryptography and Security · Computer Science 2024-09-13 Konrad Weiss , Christof Ferreira Torres , Florian Wendland

Smart contracts on Ethereum handle millions of U.S. Dollars and other financial assets. In the past, attackers have exploited smart contracts to steal these assets. The Ethereum community has developed plenty of tools to detect vulnerable…

Cryptography and Security · Computer Science 2022-02-28 Chavhan Sujeet Yashavant , Saurabh Kumar , Amey Karkare

We introduce the Deep Learning Vulnerability Analyzer (DLVA) for Ethereum smart contracts based on neural networks. We train DLVA to judge bytecode even though the supervising oracle can only judge source. DLVA's training algorithm is…

Cryptography and Security · Computer Science 2026-05-19 Tamer Abdelaziz , Aquinas Hobor

Auto-completing code enables developers to speed up coding significantly. Recent advances in transformer-based large language model (LLM) technologies have been applied to code synthesis. However, studies show that many of such synthesized…

Cryptography and Security · Computer Science 2023-10-09 André Storhaug , Jingyue Li , Tianyuan Hu

Smart contracts have been increasingly used together with blockchains to automate financial and business transactions. However, many bugs and vulnerabilities have been identified in many contracts which raises serious concerns about smart…

Software Engineering · Computer Science 2020-05-21 Zhipeng Gao , Lingxiao Jiang , Xin Xia , David Lo , John Grundy

The advent of smart contracts has enabled the rapid rise of Decentralized Finance (DeFi) on the Ethereum blockchain, offering substantial rewards in financial innovation and inclusivity. This growth, however, is accompanied by significant…

Social and Information Networks · Computer Science 2026-05-05 Shabnam Fazliani , Mohammad Mowlavi Sorond , Arsalan Masoudifard

Smart contracts play a central role in blockchain systems by encoding financial and operational logic. Still, their susceptibility to subtle security flaws poses significant risks of financial loss and erosion of trust. LLMs create new…

Artificial Intelligence · Computer Science 2026-03-24 Eduardo Sardenberg , Antonio José Grandson Busson , Daniel de Sousa Moraes , Julio Cesar Duarte , Sérgio Colcher

Smart contracts deployed on blockchain platforms are vulnerable to various security vulnerabilities. However, only a small number of Ethereum contracts have released their source code, so vulnerability detection at the bytecode level is…

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

Smart contracts on the blockchain offer decentralized financial services but often lack robust security measures, leading to significant economic losses. While substantial research has focused on identifying vulnerabilities in smart…

Cryptography and Security · Computer Science 2024-10-18 Youwei Huang , Sen Fang , Jianwen Li , Bin Hu , Tao Zhang

As the Ethereum platform continues to mature and gain widespread usage, it is crucial to maintain high standards of smart contract writing practices. While bad practices in smart contracts may not directly lead to security issues, they…

Cryptography and Security · Computer Science 2026-02-03 Xiaoqi Li , Zongwei Li , Wenkai Li , Yuqing Zhang , Xin Wang
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