DEX Front-Running

Action

Decentralized exchange (DEX) front-running represents a specific type of market manipulation where an actor inserts a transaction before a pending transaction to capitalize on the anticipated price impact. This is facilitated by the transparency of blockchain mempools, allowing observation of unconfirmed transactions. Successful execution requires a higher gas fee to ensure priority inclusion in the next block, effectively exploiting information asymmetry. The practice introduces inefficiencies and potential instability within the automated market maker (AMM) ecosystem, impacting liquidity providers and traders.