In traditional financial markets, front running means taking advantage of insider knowledge to place a trade before a large order. Traders and brokers do this hoping to make substantial profits if the market price changes in their favor.
When it comes to the meaning of front running crypto, it is the practice of analyzing other people’s pending transactions on the blockchain or mempool, identifying a large transaction, and creating a new transaction with higher fees. The front runner’s transaction is then prioritized and processed ahead of others in the queue. This can be done by bots and validators, and the objective is to profit from price changes if the original transaction causes the value of digital assets to increase.
While front running is not allowed in most jurisdictions, it is difficult to prevent in cryptocurrency trading. It often occurs on decentralized platforms where blockchain transactions are visible before confirmation, making it easy to exploit slippage tolerance.