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韩老魔KK
所以，外界看起来就是币安的热钱包自己把钱转了出去。链上看不到任何"外部地址转走资产"的动作，看起来就像 Binance 14 在做一笔正常的出账。
攻击者并不知道 Binance 14 的实时 nonce（那个钱包仍在持续发交易）。于是他在一笔交易里塞了 50 个授权，nonce 从 N 排到 N+49，赌其中一个能命中。结果只有一个生效。
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