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## 🥩 frontrunning
## frontrunning
<br>
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<br>
* determine what gas price is required to win a gas auction.
* process by which an adversary observes transactions on the network layer and then acts upon this information by, for instance, issuing a competing transaction, with the hope that this transaction is mined before a victim transaction.
* process by which an adversary observes txs on the network layer and then acts upon this information by, for instance, issuing a competing tx, with the hope that this tx is mined before a victim's tx.
* example: transaction A is broadcasted with a higher gas price than an already pending transaction B so that A gets mined before B.
* rather than programming complx algorithms to detect profitable MEV opportunities, some searchers run generalized frontrunners. These are bots that watch the mempool to detect profitable transactions.
* frontrunners will copy the potentially profitable transaction's code and replace addresses with theirs. Then, they submit the modified transaction with the replaced address and a higher gas price, frontrunning the original transaction and getting the searcher's MEV.
* generalized frontrunners are bots that watch the mempool to detect profitable transactions, copy their code, replace addresses with theirs, then submit the modified tx with a higher gas price.
<br>
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* [on cryptokitties `giveBirth()` frontrunning](https://maven11.substack.com/p/modular-mev-part-1the-introduction)
* [bancor ico frontrunning](https://hackingdistributed.com/2017/06/19/bancor-is-flawed/?ref=hackernoon.com)
* [150 lines pf python frontrunning bancor](https://hackernoon.com/front-running-bancor-in-150-lines-of-python-with-ethereum-api-d5e2bfd0d798)
* [150 lines of python frontrunning bancor](https://hackernoon.com/front-running-bancor-in-150-lines-of-python-with-ethereum-api-d5e2bfd0d798)