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Decentralized Finance (DeFi) leverages blockchain-enabled smart contracts to deliver automated and trustless financial services without the need for intermediaries. However, the public visibility of financial transactions on the blockchain…

密码学与安全 · 计算机科学 2025-10-20 Huned Materwala , Shraddha M. Naik , Aya Taha , Tala Abdulrahman Abed , Davor Svetinovic

The rapid growth of Blockchain and Decentralized Finance (DeFi) has introduced new challenges and vulnerabilities that threaten the integrity and efficiency of the ecosystem. This study identifies critical issues such as Transaction Order…

密码学与安全 · 计算机科学 2025-03-11 Xiongfei Zhao , Hou-Wan Long , Zhengzhe Li , Jiangchuan Liu , Yain-Whar Si

Cryptocurrency has seen an explosive growth in recent years, thanks to the evolvement of blockchain technology and its economic ecosystem. Besides Bitcoin, thousands of cryptocurrencies have been distributed on blockchains, while hundreds…

密码学与安全 · 计算机科学 2020-06-12 Ru Ji , Ningyu He , Lei Wu , Haoyu Wang , Guangdong Bai , Yao Guo

The use of blockchains for automated and adversarial trading has become commonplace. However, due to the transparent nature of blockchains, an adversary is able to observe any pending, not-yet-mined transactions, along with their execution…

密码学与安全 · 计算机科学 2024-02-16 Kaihua Qin , Stefanos Chaliasos , Liyi Zhou , Benjamin Livshits , Dawn Song , Arthur Gervais

Many classical blockchains are known to have an embarrassingly low transaction throughput, down to Bitcoin's notorious seven transactions per second limit.Various proposals and implementations for increasing throughput emerged in the first…

密码学与安全 · 计算机科学 2023-03-08 Lioba Heimbach , Quentin Kniep , Yann Vonlanthen , Roger Wattenhofer

Since the inception of permissionless blockchains with Bitcoin in 2008, it became apparent that their most well-suited use case is related to making the financial system and its advantages available to everyone seamlessly without depending…

综合金融 · 定量金融 2023-06-16 Georgios Palaiokrassas , Sandro Scherrers , Iason Ofeidis , Leandros Tassiulas

As blockchain ecosystems grow, financially motivated attackers increasingly exploit decentralized finance (DeFi) protocols, causing frequent and severe losses. Unlike conventional cyberattacks, DeFi exploits propagate rapidly due to the…

密码学与安全 · 计算机科学 2026-04-30 Bowen Cai , Weiheng Bai , Youshui Lu , Haoran Xu , Yuannan Yang , Yajin Zhou , Kangjie Lu

Cross-chain interoperability is a core component of modern blockchain infrastructure, enabling seamless asset transfers and composable applications across multiple blockchain ecosystems. However, the transparency of cross-chain messages can…

计算工程、金融与科学 · 计算机科学 2025-11-20 Chuanlei Li , Zhicheng Sun , Jing Xin Yuu , Xuechao Wang

Cryptocurrencies aim to replicate physical cash in the digital realm while removing centralized and trusted intermediaries. Decentralization is achieved by the blockchain, a permanent public ledger that contains a record of every…

密码学与安全 · 计算机科学 2024-06-04 Domokos Miklós Kelen , István András Seres

Recently, Decentralized Finance (DeFi) platforms on Ethereum are booming, and numerous traders are trying to capitalize on the opportunity for maximizing their benefits by launching front-running attacks and extracting Miner Extractable…

密码学与安全 · 计算机科学 2022-08-08 Xingyu Lyu , Mengya Zhang , Xiaokuan Zhang , Jianyu Niu , Yinqian Zhang , Zhiqiang Lin

DEX, or decentralized exchange, is a prominent class of decentralized finance (DeFi) applications on blockchains, attracting a total locked value worth tens of billions of USD today. This paper presents the first large-scale empirical study…

密码学与安全 · 计算机科学 2024-01-23 Jiaqi Chen , Yibo Wang , Yuxuan Zhou , Wanning Ding , Yuzhe Tang , XiaoFeng Wang , Kai Li

Decentralized finance, i.e., DeFi, has become the most popular type of application on many public blockchains (e.g., Ethereum) in recent years. Compared to the traditional finance, DeFi allows customers to flexibly participate in diverse…

密码学与安全 · 计算机科学 2021-03-05 Bin Wang , Han Liu , Chao Liu , Zhiqiang Yang , Qian Ren , Huixuan Zheng , Hong Lei

The financial sector's adoption of technology-driven data analysis has enhanced operational efficiency and revenue generation by leveraging personal sensitive data. However, the inherent characteristics of blockchain hinder decentralized…

密码学与安全 · 计算机科学 2023-11-13 Zhuangtong Huang , Jiawei Zhu , Zhongyu Huang , Yixin Xu , Jerome Yen , Ye Wang

Maximal Extractable Value (MEV) refers to a class of attacks to decentralized applications where the adversary profits by manipulating the ordering, inclusion, or exclusion of transactions in a blockchain. Decentralized Finance (DeFi)…

密码学与安全 · 计算机科学 2025-10-17 Massimo Bartoletti , Riccardo Marchesin , Roberto Zunino

Decentralized finance (DeFi) protocols are crypto projects developed on the blockchain to manage digital assets. Attacks on DeFi have been frequent and have resulted in losses exceeding $80 billion. Current tools detect and locate possible…

密码学与安全 · 计算机科学 2025-11-04 Xiaoqi Li , Wenkai Li , Zhiquan Liu , Yuqing Zhang , Yingjie Mao

Decentralized finance (DeFi) protocols are crypto projects developed on the blockchain to manage digital assets. Attacks on DeFi have been frequent and have resulted in losses exceeding \$77 billion. However, detection methods for malicious…

密码学与安全 · 计算机科学 2024-05-21 Wenkai Li , Xiaoqi Li , Yuqing Zhang , Zongwei Li

Current blockchain technologies provide very limited interoperability. Restrictions with regards to asset transfers and data exchange between different blockchains reduce usability and comfort for users, and hinder novel developments within…

分布式、并行与集群计算 · 计算机科学 2019-05-16 Michael Borkowski , Marten Sigwart , Philipp Frauenthaler , Taneli Hukkinen , Stefan Schulte

Distributed Leger Technologies (DLTs), most notably Blockchain technologies, bring decentralised platforms that eliminate a single trusted third party and avoid the notorious single point of failure vulnerability. Since Nakamoto's Bitcoin…

密码学与安全 · 计算机科学 2019-11-21 Qiang Tang

Smart contracts led to the emergence of the decentralized finance (DeFi) marketplace within blockchain ecosystems, where diverse participants engage in financial activities. In traditional finance, there are possibilities to create values,…

密码学与安全 · 计算机科学 2024-06-21 Rasheed , Yash Chaurasia , Parth Desai , Sujit Gujar

Ethereum is currently the second largest blockchain by market capitalization and a popular platform for cryptocurrencies. As it has grown, the high value present and the anonymity afforded by the technology have led Ethereum to become a…

密码学与安全 · 计算机科学 2025-01-22 Calvin Josenhans , Andrey Kuehlkamp , Jarek Nabrzyski
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