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DeFi & MEV

What Is MEV and How Do You Protect Protocols from Front-Running?

Understanding Maximal Extractable Value, sandwich attacks, and private mempool defenses.

LOZULA Research Team
2026-04-16
9 min read

Key Takeaways for Security Teams

  • Always set reasonable minimum return amounts (minAmountOut) in swap functions.

How MEV searchers exploit unconfirmed transactions in public mempools and how protocol designers can prevent sandwich attacks.

MEV Attack Vectors

Front-running, back-running, and sandwich attacks extract millions from decentralized exchange users. Protocols should enforce strict slippage limits and leverage MEV-share private RPC relays.

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