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Smart Contracts are essential blockchain components, mainly written in Solidity. The high availability of public Solidity code leads to frequent reuse and high clone ratios. Since cloning can propagate vulnerabilities and flaws, effective…

Many Ethereum smart contracts rely on block attributes such as block.timestamp or blockhash to generate random numbers for applications like lotteries and games. However, these values are predictable and miner-manipulable, creating the Bad…

Cryptography and Security · Computer Science 2026-01-16 Hadis Rezaei , Rahim Taheri , Francesco Palmieri

Ethereum smart contracts are automated decentralized applications on the blockchain that describe the terms of the agreement between buyers and sellers, reducing the need for trusted intermediaries and arbitration. However, the deployment…

Cryptography and Security · Computer Science 2021-03-24 Oliver Lutz , Huili Chen , Hossein Fereidooni , Christoph Sendner , Alexandra Dmitrienko , Ahmad Reza Sadeghi , Farinaz Koushanfar

Smart contracts are self-executing programs on blockchain platforms like Ethereum, which have revolutionized decentralized finance by enabling trustless transactions and the operation of decentralized applications. Despite their potential,…

Software Engineering · Computer Science 2026-03-25 Gerardo Iuliano , Dario Di Nucci

Smart contract technology facilitates self-executing agreements on the blockchain, eliminating dependency on an external trusted authority. However, smart contracts may expose vulnerabilities that can lead to financial losses and…

Cryptography and Security · Computer Science 2026-01-14 Emre Balci , Timucin Aydede , Gorkem Yilmaz , Ece Gelal Soyak

Ethereum smart contracts, which are autonomous decentralized applications on the blockchain that manage assets often exceeding millions of dollars, have become primary targets for cyberattacks. In 2023 alone, such vulnerabilities led to…

Cryptography and Security · Computer Science 2023-12-29 Christoph Sendner , Lukas Petzi , Jasper Stang , Alexandra Dmitrienko

Reentrancy vulnerability as one of the most notorious vulnerabilities, has been a prominent topic in smart contract security research. Research shows that existing vulnerability detection presents a range of challenges, especially as smart…

Software Engineering · Computer Science 2024-03-19 Zexu Wang , Jiachi Chen , Yanlin Wang , Yu Zhang , Weizhe Zhang , Zibin Zheng

Due to the immutable and decentralized nature of Ethereum (ETH) platform, smart contracts are prone to security risks that can result in financial loss. While existing machine learning-based vulnerability detection algorithms achieve high…

Cryptography and Security · Computer Science 2023-07-18 Christoph Sendner , Ruisi Zhang , Alexander Hefter , Alexandra Dmitrienko , Farinaz Koushanfar

Smart contract is the building block of blockchain systems that enables automated peer-to-peer transactions and decentralized services. With the increasing popularity of smart contracts, blockchain systems, in particular Ethereum, have been…

Cryptography and Security · Computer Science 2021-05-24 Huiwen Hu , Yuedong Xu

In many domains, there are many examples and far fewer labels for those examples; e.g. we may have access to millions of lines of source code, but access to only a handful of warnings about that code. In those domains, semi-supervised…

Software Engineering · Computer Science 2023-02-07 Huy Tu , Tim Menzies

Smart contracts are a major tool in Ethereum transactions. Therefore hackers can exploit them by adding code vulnerabilities to their sources and using these vulnerabilities for performing malicious transactions. This paper presents two…

Cryptography and Security · Computer Science 2024-08-19 Natan Katz

Smart contracts hold digital coins worth billions of dollars, their security issues have drawn extensive attention in the past years. Towards smart contract vulnerability detection, conventional methods heavily rely on fixed expert rules,…

Machine Learning · Computer Science 2021-06-18 Zhenguang Liu , Peng Qian , Xiang Wang , Lei Zhu , Qinming He , Shouling Ji

Smart contract vulnerability detection draws extensive attention in recent years due to the substantial losses caused by hacker attacks. Existing efforts for contract security analysis heavily rely on rigid rules defined by experts, which…

Cryptography and Security · Computer Science 2021-07-27 Zhenguang Liu , Peng Qian , Xiaoyang Wang , Yuan Zhuang , Lin Qiu , Xun Wang

Smart contracts are blockchain programs that often handle valuable assets. Writing secure smart contracts is far from trivial, and any vulnerability may lead to significant financial losses. To support developers in identifying and…

Cryptography and Security · Computer Science 2023-06-09 Monika di Angelo , Thomas Durieux , João F. Ferreira , Gernot Salzer

Currently, smart contract vulnerabilities (SCVs) have emerged as a major factor threatening the transaction security of blockchain. Existing state-of-the-art methods rely on deep learning to mitigate this threat. They treat each input…

Cryptography and Security · Computer Science 2024-04-30 Yizhou Chen , Zeyu Sun , Zhihao Gong , Dan Hao

Machine learning (ML) enables accurate and fast molecular property predictions, which are of interest in drug discovery and material design. Their success is based on the principle of similarity at its heart, assuming that similar molecules…

Computational Engineering, Finance, and Science · Computer Science 2026-01-09 Fang Wu

Ethereum smart contracts are highly powerful, immutable, and able to retain massive amounts of tokens. However, smart contracts keep attracting attackers to benefit from smart contract flaws and Ethereum unexpected behavior. Thus,…

Cryptography and Security · Computer Science 2024-04-10 Wejdene Haouari , Abdelhakim Senhaji Hafid , Marios Fokaefs

Semi-supervised learning (SSL) provides a powerful framework for leveraging unlabeled data when labels are limited or expensive to obtain. SSL algorithms based on deep neural networks have recently proven successful on standard benchmark…

Machine Learning · Computer Science 2019-06-18 Avital Oliver , Augustus Odena , Colin Raffel , Ekin D. Cubuk , Ian J. Goodfellow

Ethereum smart contracts are programs that run on the Ethereum blockchain, and many smart contract vulnerabilities have been discovered in the past decade. Many security analysis tools have been created to detect such vulnerabilities, but…

Cryptography and Security · Computer Science 2021-01-11 Nami Ashizawa , Naoto Yanai , Jason Paul Cruz , Shingo Okamura

The detection of vulnerabilities in smart contracts remains a significant challenge. While numerous tools are available for analyzing smart contracts in source code, only about 1.79% of smart contracts on Ethereum are open-source. For…

Cryptography and Security · Computer Science 2025-09-04 Wenkai Li , Xiaoqi Li , Yingjie Mao , Yuqing Zhang