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How two brothers allegedly swiped $25M in a 12-second Ethereum heist

ID: 31aacf6e-0372-566a-a4dd-aad0db01c753

STIX ID: report--31aacf6e-0372-566a-a4dd-aad0db01c753

Feed Name: The Register (Security)

Threat Score
78/100

Date Published: 2024-05-18

Date Updated: 2026-04-26

Author: Matthew Connatser

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Two brothers allegedly exploited a flaw in the open-source MEV-Boost relay used in the Ethereum validation stack to obtain full proposed blocks prematurely, reorder transactions in their favor, and steal roughly $25M in assets; they set up validators, baited searcher bundles with illiquid tokens, executed the manipulated blocks within seconds, and later attempted to launder proceeds and were charged with wire fraud and money laundering.

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