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Smart contracts are programs running on a blockchain. They are immutable to change, and hence can not be patched for bugs once deployed. Thus it is critical to ensure they are bug-free and well-designed before deployment. A Contract defect…

Software Engineering · Computer Science 2020-04-20 Jiachi Chen , Xin Xia , David Lo , John Grundy , Daniel Xiapu Luo , Ting Chen

Ethereum smart contracts are an innovation built on top of the blockchain technology, which provides a platform for automatically executing contracts in an anonymous, distributed, and trusted way. The problem is magnified by the fact that…

Cryptography and Security · Computer Science 2019-11-07 Jialiang Chang , Bo Gao , Hao Xiao , Jun Sun , Yan Cai , Zijiang Yang

Smart contracts are Turing-complete programs running on the blockchain. They are immutable and cannot be modified, even when bugs are detected. Therefore, ensuring smart contracts are bug-free and well-designed before deploying them to the…

Software Engineering · Computer Science 2021-03-24 Jiachi Chen , Xin Xia , David Lo , John Grundy , Xiapu Luo , Ting Chen

The security of smart contracts, which are an important part of blockchain technology, has attracted much attention. In particular, reentrancy vulnerability, which is hidden and complex, poses a great threat to smart contracts. In order to…

Cryptography and Security · Computer Science 2023-12-27 Chang Chu

In the case of upgrading smart contracts on blockchain systems, it is essential to consider the continuity of upgrades and subsequent maintenance. In practice, upgrade operations often introduce new vulnerabilities. Existing static analysis…

Cryptography and Security · Computer Science 2026-01-21 Xiaoqi Li , Lei Xie , Wenkai Li , Zongwei Li

Smart contracts are programs that are executed on a blockhain. They have been used for applications in voting, decentralized finance, and supply chain management. However, vulnerabilities in smart contracts have been abused by hackers,…

Programming Languages · Computer Science 2021-10-19 Timothy Mou , Michael Coblenz , Jonathan Aldrich

Smart contracts are computer programs that are executed by a network of mutually distrusting agents, without the need of an external trusted authority. Smart contracts handle and transfer assets of considerable value (in the form of…

Programming Languages · Computer Science 2018-06-19 Krishnendu Chatterjee , Amir Kafshdar Goharshady , Yaron Velner

Smart contracts are essential for managing digital assets in blockchain networks, highlighting the need for effective security measures. This paper introduces SmartLLMSentry, a novel framework that leverages large language models (LLMs),…

Cryptography and Security · Computer Science 2024-12-02 Oualid Zaazaa , Hanan El Bakkali

Blockchain recently became very popular due to its use in cryptocurrencies and potential application in various domains (e.g., retail, healthcare, insurance). The smart contract is a key part of blockchain systems and specifies an agreement…

Cryptography and Security · Computer Science 2023-04-13 Fernando Richter Vidal , Naghmeh Ivaki , Nuno Laranjeiro

Blockchain technology (BT) Ethereum Smart Contracts allows programmable transactions that involve the transfer of monetary assets among peers on a BT network independent of a central authorizing agency. Ethereum Smart Contracts are programs…

Cryptography and Security · Computer Science 2021-05-21 Noama Fatima Samreen , Manar H. Alalfi

The security of smart contracts is critical in blockchain systems, where even minor vulnerabilities can lead to substantial financial losses. Researchers proposed several vulnerability detection tools evaluated using existing benchmarks.…

Software Engineering · Computer Science 2025-04-23 Gerardo Iuliano , Luigi Allocca , Matteo Cicalese , Dario Di Nucci

Ethereum is the largest blockchain platform that supports smart contracts. Users deploy smart contracts by publishing the smart contract's bytecode to the blockchain. Since the data in the blockchain cannot be modified, even if these…

Software Engineering · Computer Science 2020-09-07 Pengcheng Zhang , Feng Xiao , Xiapu Luo

Smart contracts are the cornerstone of decentralized applications and financial protocols, which extend the application of digital currency transactions. The applications and financial protocols introduce significant security challenges,…

Cryptography and Security · Computer Science 2025-04-22 Hongli Peng , Xiaoqi Li , Wenkai 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

Smart contracts underpin high-value ecosystems such as decentralized finance (DeFi), yet recurring vulnerabilities continue to cause losses worth billions of dollars. Although numerous security analyzers that detect such flaws exist,…

Cryptography and Security · Computer Science 2026-03-03 Tamer Abdelaziz , Salma Alsaghir , Karim Ali

Ethereum Smart Contracts based on Blockchain Technology (BT)enables monetary transactions among peers on a blockchain network independent of a central authorizing agency. Ethereum smart contracts are programs that are deployed as…

Cryptography and Security · Computer Science 2021-05-17 Noama Fatima Samreen , Manar H. Alalfi

Smart contracts are essential to decentralized finance (DeFi) and blockchain ecosystems but are increasingly vulnerable to exploits due to coding errors and complex attack vectors. Traditional static analysis tools and existing…

Cryptography and Security · Computer Science 2025-02-20 Jun Kevin , Pujianto Yugopuspito

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

As blockchain technology and smart contracts become widely adopted, securing them throughout every stage of the transaction process is essential. The concern of improved security for smart contracts is to find and detect vulnerabilities…

Cryptography and Security · Computer Science 2025-03-11 S M Mostaq Hossain , Amani Altarawneh , Jesse Roberts

Smart contracts have transformed decentralized finance by enabling programmable, trustless transactions. However, their widespread adoption and growing financial significance have attracted persistent and sophisticated threats, such as…

Cryptography and Security · Computer Science 2025-08-13 Pasquale De Rosa , Pascal Felber , Valerio Schiavoni