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MIT Students Stole $25 Million In Seconds By Exploiting ETH Blockchain Bug, DOJ Says (slashdot.org)
submitted 2 years ago by to c/technology@lemmy.world
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[–] 1 point 2 years ago (2 children)

It’s a private MEV mempool

Are you sure there is such a thing? My understanding was that they just submit their sandwich transactions to the mempool with higher and lower gas respectively to achieve their desired priority ranking. Could be wrong though.

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  • [–] 2 points 2 years ago (1 child)

    I'm sure, yes. If you submit to a public mempool, you have no guarantees that your two transactions will land on either side of the target transaction in the same block (They likely won't). You need to leverage conditional transactions with MEV so you guarantee the miner will select and position your transactions where you need them. In this case, before and after the target transaction.

    Check out the Ethereum Foundation's page on MEV for more info.

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