5 papers · 1 filter
Dissimilar Redundancy in DeFi
Daniel Perez, Lewis Gudgeon
The meteoric rise of Decentralized Finance (DeFi) has been accompanied by a plethora of frequent and often financially devastating attacks on its protocols There have been over 70…
Revisiting Transactional Statistics of High-scalability Blockchains
Daniel Perez, Jiahua Xu, Benjamin Livshits
Scalability has been a bottleneck for major blockchains such as Bitcoin and Ethereum. Despite the significantly improved scalability claimed by several high--profile blockchain pro…
The Decentralized Financial Crisis
Lewis Gudgeon, Daniel Perez, Dominik Harz +2
The Global Financial Crisis of 2008, caused by the accumulation of excessive financial risk, inspired Satoshi Nakamoto to create Bitcoin. Now, more than ten years later, Decentrali…
Broken Metre: Attacking Resource Metering in EVM
Daniel Perez, Benjamin Livshits
Blockchain systems, such as Ethereum, use an approach called "metering" to assign a cost to smart contract execution, an approach which is designed to incentivise miners to operate…
Smart Contract Vulnerabilities: Vulnerable Does Not Imply Exploited
Daniel Perez, Benjamin Livshits
In recent years, we have seen a great deal of both academic and practical interest in the topic of vulnerabilities in smart contracts, particularly those developed for the Ethereum…