Ethereum Rollups' Pricing Flaws Exposed: Study Warns of Cost Inflation and Attacks
A recent study by researchers from zkSecurity, Prooflab, and Imperial College London has uncovered a significant issue in Ethereum's rollup networks. The study, titled 'Unaligned Incentives: Pricing Attacks Against Blockchain Rollups', reveals that small transactions may be over- or underpriced, leading to inflated user costs and potential denial-of-service attacks.
The research, led by Stefanos Chaliasos, Conner Swann, Sina Pilehchiha, Nicolas Mohnblatt, and Benjamin Livshits, found that rollups often collapse computation, data availability, and gas costs into a single formula or apply fixed rules. This simplification distorts ethereum price and creates opportunities for exploitation. The study benchmarked five major rollups and discovered wide differences in eth price-setting methods, highlighting the need for more nuanced pricing mechanisms.
To address this issue, the paper suggests tools such as dynamic adjustment, partial batching, and disclosure of cost components. It also urges the implementation of multidimensional fee mechanisms that separately price computation, data posting, and proving. This approach aims to balance fairness, security, and usability, preventing systemic risks and mitigating potential attacks.
The study warns that mispricing small transactions can lead to attackers subsidizing these transactions, potentially clogging networks or raising eth price for honest users. As rollups continue to play a crucial role in Ethereum's scalability, understanding and addressing these eth price issues is vital for the network's security and usability.
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