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MEV Bot Incident Analysis

ID: fa4793f0-2a62-51f2-9532-85821c656db8

STIX ID: report--fa4793f0-2a62-51f2-9532-85821c656db8

Feed Name: CertiK Blog

Threat Score
78/100

Date Published: 2023-04-03

Date Updated: 2026-06-11

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**Executive Summary:** CertiK identified a malicious Ethereum validator that exploited a vulnerability in the Flashbots mev-boost-relay to reveal and re-bundle MEV bot transaction bundles, allowing the attacker to front-run/back-run trades and steal roughly $25 million from five MEV bots; the bug has since been patched to prevent this specific attack vector.

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