Malicious MEV attacks are a major threat to Ethereum traders, with nearly 2,000 daily sandwich attacks extracting over $2 million monthly from the network. Traders executing large WETH, WBTC, or stable swaps are at risk of losing significant portions of their trades.

MEV exploits blockchain transparency, where transaction data is visible before execution. Mempool encryption, especially through threshold encryption models like Shutter and Batched threshold encryption (BTE), can help mitigate MEV risks.

Flash Freezing Flash Boys (F3B) introduces per-transaction encryption to address vulnerabilities in existing threshold encryption systems. F3B reduces computational load and storage requirements, making per-transaction encryption more practical for securing transactions.

F3B can be implemented using TDH2 or PVSS protocols, each with unique advantages and disadvantages in terms of flexibility, latency, and storage overhead. The protocols ensure secure transaction processing while minimizing performance impact on Ethereum.

F3B incentivizes honest behavior among trustees through staking mechanisms and slashing contracts. It penalizes premature decryption disclosures but relies on the assumption that most trustees will behave honestly, posing potential risks of collusion among committee members.

Challenges remain in deploying F3B on Ethereum due to integration complexity, requiring modifications to the execution layer. Despite this, F3B’s cryptographic approach offers valuable research insights applicable to various blockchain networks and decentralized applications.

F3B represents a significant milestone in MEV mitigation, extending beyond Ethereum. Its trust-minimized data sharing mechanism can benefit emerging blockchain networks and decentralized applications requiring delayed execution, offering potential solutions to front-running and bid manipulation.

Read more at Cointelegraph: Per-transaction encryption to fight malicious MEV