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跨链桥 Long :攻击者盗取 46.79 WETH,无用户资金损失

2026-09-15 15:27:28

ChainCatcher 消息,托管式跨链桥 Long 发布 9 月 14 日 WETH 黑客事件事后报告。当日 07:07 UTC,该桥从 Robinhood Chain 金库向攻击者地址支付 46.7928 WETH(约 11.8 万美元)。无用户资金损失,金库已从平台收入全额补足,桥已重建加固并持续运行。恢复期间部分订单延迟数小时。

桥的 keeper 通过 RPC 读取 Arc 上的销毁事件以释放资产。当时官方主网端点未上线,依赖公共 RPC。备份端点超额后,主端点在短窗口内向 keeper 提供伪造提款事件日志,这些事件在 Arc 上并不存在。keeper 当时防护针对重放与重复支付,未质疑数据源,遂释放该笔 WETH。同期另三笔伪造提款在链上全部回退。伪造事件经 RPC 通道进入,合约、密钥与金库未被突破。

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