medium10 pts · first answer countsmevdefi

Front-running a swap

A user sends a large DEX swap with 5% slippage allowed. What can a bot watching the public mempool do?

A.Nothing; transactions are private until minedB.Cancel the user's transactionC.Sandwich it: buy before the user to push the price up, then sell right after, profiting up to the slippage limitD.Change the token the user receives

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Front-running a swap

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