Mempool manipulation involves strategically altering the order or content of transactions waiting in a blockchain’s memory pool (mempool) to gain an unfair advantage. Attackers might reorder, censor, or insert their own transactions to profit from arbitrage opportunities, frontrunning, or other exploitative tactics. This activity undermines the integrity of transaction processing and can lead to significant losses for other network participants. It represents a form of value extraction.
Context
Mempool manipulation is a significant concern within decentralized finance, where the transparency of pending transactions creates opportunities for exploitation. Current discussions focus on advanced techniques, such as Maximal Extractable Value (MEV) strategies, and countermeasures like proposer-builder separation (PBS) to mitigate these exploits. The ongoing effort to secure transaction ordering and prevent such manipulation is critical for fostering a more equitable and reliable blockchain ecosystem.
The analysis of DAG-based systems reveals three new frontrunning attack vectors, proving high-throughput architectures introduce complex, unmitigated MEV risk.
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