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How Does Maximal Extractable Value (MEV) Relate to the Concept of Front-Running in DeFi?

Front-running is a specific, malicious form of Maximal Extractable Value (MEV) extracted by reordering or censoring transactions.
Greeks.Live14.11.25

How Does Maximal Extractable Value (MEV) Relate to the Concept of Front-Running in DeFi?

MEV is the profit a validator or miner can extract by arbitrarily including, excluding, or reordering transactions within a block. Front-running is a specific, malicious type of MEV where an actor sees a pending transaction in the public memory pool (mempool) and places their own transaction ahead of it to profit from the anticipated price movement.

Thus, front-running is a subset of the broader MEV problem. MEV also includes sandwich attacks and generalized arbitrage.

Mitigating MEV is a key focus for improving fairness in decentralized finance.

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