this post was submitted on 16 May 2024
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[–] [email protected] 115 points 6 months ago (27 children)

Here is a more detailed explanation of the exploit.

The Pepaire-Bueno brothers exploited a bug in MEV-boost's code that allowed them to preview the content of blocks before they were officially delivered to validators, according to the indictment.

The brothers created 16 Ethereum validators and targeted three specific traders who operated MEV bots, the indictment said. They used bait transactions to figure out how those bots traded, lured the bots to one of their validators which was validating a new block and basically tricked these bots into proposing certain transactions. [...]

So hardly an attack on any core system of cryptocurrencies.

[–] survirtual 35 points 6 months ago (18 children)

So they discovered faulty code and made some money?

Can anyone explain to me how this is illegal?

The code is a contract. If someone writes bad code and loses money, then write better code - just like if someone writes a bad legal contract and loses money.

The justice system is awful.

[–] [email protected] 39 points 6 months ago* (last edited 6 months ago) (3 children)

IANAL and all, but bad/unfavorable contracts and literal deception/fraud are two different things, at least in the legal system. Not everything that's technically possible is also allowed, obviously.

Compare it to using a security flaw to hack into a system. Technically you're only using the official API, maybe in unusual ways, but still. But you're doing it in bad faith and causing harm, maybe pretending to be someone you're not or injecting fake data into the system, and that can make a difference.

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