Extractive Middleman Interference

Mechanism

Extractive Middleman Interference refers to the tactical insertion of an intermediary entity between a primary liquidity provider and a trade execution venue to capture asymmetric value. This phenomenon frequently manifests in decentralized finance when bots monitor the mempool to front-run pending transactions by offering higher gas fees to validators. By altering the sequencing of orders, these actors extract surplus from retail and institutional participants alike, effectively acting as an invisible tax on market efficiency.