web3: Vulnerability in Coldcard results in over 1,596 BTC being compromised; Korean users suffer less loss
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3h ago
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A vulnerability in Coldcard hardware wallets has resulted in the loss of over 1,596 BTC. Korean users, who tend to generate mnemonic phrases manually and offline more frequently, have been relatively less affected.
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Coldcard 硬件钱包近期曝出安全问题,部分设备的随机数生成存在缺陷,导致部分助记词可能被攻击者推算。已确认损失超过 1596 枚比特币,按文中口径约合 1.3 亿美元,受影响地址可能达到数千个。

已确认损失超过 1596 枚 BTC

制造商 Coinkite 已销毁剩余问题批次设备,并提醒用户重新生成助记词。独立估算显示,受影响地址约为 7300 个;若把疑似案例计入,潜在损失可能接近 2000 枚比特币。

这起事件中,韩国比特币社区成为少数损失较轻的地区。分析人士 Koji Higashi 认为,这并非单纯运气,而是与当地用户长期形成的自托管习惯有关。

韩国用户更常手动生成助记词

韩国一些比特币教育者多年来一直建议,用户不要完全依赖硬件钱包内置的随机数功能,而应自行生成熵源,再离线制作 BIP39 助记词。

  • 通过掷骰子或抛硬币生成随机数
  • 在离线环境下生成 BIP39 助记词
  • 128 次或 256 次抛硬币对应不同词数

当地指南通常会提供完整步骤。用户可对照纸质 BIP39 词表核验结果,并借助 SeedSigner 这类离线工具检查校验和,而不是把随机性完全交给硬件钱包本身。

英语社区损失更大

文章提到,英语世界的自托管用户虽然整体技术水平较高,但这次遭遇的损失明显更大。一个原因是,当某款产品在技术社区内被广泛接受后,用户往往更少质疑其安全前提。

相比之下,韩国社区中的一些主要教育者与 Coinkite 没有商业关系,也长期提醒用户不要把助记词生成完全交给设备固件处理。此次事件显示,这类做法在降低单点风险方面起到了作用。

从结果看,这起事件再次提醒市场,自托管安全不仅取决于钱包硬件本身,也取决于助记词生成方式是否足够独立。对于持有较大规模比特币的用户来说,减少对单一设备或厂商的依赖,仍是风险控制中的关键环节。

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