Front-Running Tactics

Front-running tactics involve the unethical and often illegal practice where a trader or market participant uses non-public information about pending large orders to execute their own trades before the market reacts. In traditional finance, this happens when a broker sees a client order and executes their own firm order first to profit from the anticipated price movement.

In the context of cryptocurrency and decentralized finance, this often occurs in the mempool, where bots scan pending transactions. These bots identify profitable trades and insert their own transactions with higher gas fees to ensure they are processed first by miners or validators.

This exploits the transparency of the blockchain to extract value from unsuspecting users. It is a direct manipulation of market microstructure to capture spread or price impact.

Such tactics undermine trust in decentralized exchanges and create an adversarial environment for retail participants. The goal of the front-runner is to capture the slippage that the original trader would have otherwise incurred.

It is essentially a form of latency arbitrage where the advantage is gained through computational speed and fee manipulation. Ultimately, these tactics represent a significant challenge to the fairness and efficiency of automated market makers.