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某 MEV 機器人遭攻擊損失達 2000 萬美元,系 bundle 交易過程中資金被替換

2023-04-03 15:23:45

ChainCatcher 消息,推特用戶 @GaoFlynn 發文稱:"有幾個MEV套利大戶遭受重創,整個機制鏈路上有一環出現作惡者,從 builder 到 relayer 到 validator 都有可能,這可能是撼動整個 MEV 生態的第一個重大轉折點。

簡單解釋為黑客拿到了三明治套利的大戶 bot 的 bundle 交易,bundle 裡有 3 個交易為1. 大量買入,2. 被夾用戶的交易,3. 大量賣出。黑客拿到了這個 bundle,拆解了bundle,把2替換了成自己的交易,用便宜代幣換走了bot的資金,之後第3步交易失敗。"

此外,根據 @punk3155 的推文,某 MEV 機器人遭遇了上述攻擊,總損失已達 2000 萬美元。(來源鏈接)

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