How Does a High Gas Fee Translate into a Higher Probability of a Transaction Being Front-Run?

In public blockchain systems, validators and miners are economically incentivized to include transactions that offer the highest fees, as this maximizes their profit. A front-runner exploits this by submitting a transaction with a gas fee slightly higher than the victim's pending transaction.

This high fee signals to the validator to prioritize the front-runner's order, ensuring it is placed immediately before the victim's trade, thus guaranteeing the front-run.