Problem
ABSTRACT The growth of the decentralized finance (DeFi) ecosystem built on blockchain technology and smart contracts has led to an increased demand for secure and reliable smart contract development. How- ever, attacks targeting smart contracts are increasing, causing an estimated $6.45 billion in financial losses. Researchers have pro- posed various automated security tools to detect vulnerabilities, but their real-world impact remains uncertain.
Approach
In this paper, we aim to shed light on the effectiveness of au- tomated security tools in identifying vulnerabilities that can lead to high-profile attacks, and their overall usage within the indus- try. Our comprehensive study encompasses an evaluation of five SoTA automated security tools, an analysis of 127 high-impact real- world attacks resulting in $2.3 billion in losses, and a survey of 49 developers and auditors working in leading DeFi protocols. Our findings reveal a stark reality: the tools could have prevented a mere 8% of the attacks in our dataset, amounting to $149 million out of the $2.3 billion in losses.
Results
Notably, all preventable attacks were related to reentrancy vulnerabilities. Furthermore, practition- ers distinguish logic-related bugs and protocol layer vulnerabilities as significant threats that are not adequately addressed by existing security tools. Our results emphasize the need to develop special- ized tools catering to the distinct demands and expectations of developers and auditors. Further, our study highlights the necessity for continuous advancements in security tools to effectively tackle the ever-evolving challenges confronting the DeFi ecosystem. 1