转自：Odaily星球日报
作者 ：秦晓峰
北京时间今天上午 10 点，链上数据提供商 Cryptoquant 发文表示，加密交易所 Kucoin 疑似被盗。
“看起来 Kucoin 似乎被攻击了。通常，交易所在被黑客攻击后，比特币流出会迅速增加，然后变成零。自北京时间 9 月 26 日凌晨 4 时起，Kucoin流出持续为零。“Cryptoquant 解释称。
作为一家老牌交易所，Kucoin 被盗消息立即在社群流传。加之一些 Kucoin 用户无法提币，更是增加了被盗消息的真实性。
虽然最初 Kucoin 官方客服回应称只是系统问题，暂停充提币，以求缓解恐慌。但最终，Kucoin CEO 还是承认，确实遭遇了黑客攻击。
Kucoin 究竟为何遭遇攻击，损失了多少加密货币？这些被盗资金会对市场造成什么影响？Kucoin 能否承担用户损失，避免成为第二个「Mt.Gox」？
（1）事件回顾：热钱包私钥泄露
在 Cryptoquant 发布消息后，10 点 41 分，Kucoin 官方发布公告称：自北京时间今天 3 点起，检测到一些大额提款，不过并未解释具体原因，有没有证实是否被盗。
紧接着，有用户发现，Kucoin 暂停了充提币。官方客服在电报群中解释称，只是因为系统故障，并建议用户“在这种情况下，不应该进行充提币”。
这是什么情况？官方客服「暧昧」的解释，似乎为「资金被盗」增加了一些可信度。
不过，虽然官方关闭了提币功能，还是有用户发现，Kucoin 账户还在不断往外转出资金，疑似黑客转移资产，再一次证实了被盗的可能性，引起社群恐慌。
两小时后，北京时间中午 12 点半，Kucoin 首席执行官 Johnny Lyu 进行了直播，证实了被盗的真实性，并提供了一份该事件的时间表（以下时间均为北京时间）：
- 02:51，首次收到来自风险管理系统的警报，监测到所有异常交易均来自此钱包地址：0xeb31973e0febf3e3d7058234a5ebbae1ab4b8c23；
- 03:01，收到了风险管理系统发出的有关热钱包余额异常的警报，成立了一个特别团队来应对这一事件。
- 03:20，KuCoin 运营团队紧急关闭了钱包服务器，发现关闭后仍然存在异常交易的情况。
- 04:20，KuCoin 钱包团队开始将剩余资产从热钱包转移到冷存储中。
- 04:25，KuCoin 钱包团队、运营团队和安全团队开始根据收集到的信息和线索调查此事件。
- 04:40，KuCoin 团队为此事件的重要合作伙伴和做市商建立了沟通渠道。
- 04:50，KuCoin 钱包团队将大部分剩余资产从热钱包转移到了冷钱包。
Johnny Lyu 表示，之所以发生资产被盗，主要是热钱包私钥泄露，具体原因还在调查。另外，本次主要涉及币种为 BTC、ETH 以及一些 ERC20 代币；至于具体价值，正在清算尚未公布，“受影响的资金仅占总资产的一小部分”。
但根据 Decrypt 报道，Kucoin 本次损失在 1.5 亿美元左右。文章称，被 Kucoin 标记异常的地址中，从今天凌晨至今累计收到 11486 枚ETH、458866 枚 GLA、28443 枚 HAT、21660273 枚 OCEAN、29999 枚 CHR，另外，还有一定数量的 ARPA、 AOA、MKR、OMG、ZRX、SXP 等代币，累计价值 1.46 亿美元。
那么，在这次安全事故中受到损失的用户，Kucoin 是否会赔偿？
Johnny Lyu 给出肯定回复。“2018 年初开始，Kucoin 就建立了保险基金来处理此类意外安全问题。如果任何用户资金受此事件影响，KuCoin和我们的保险资金将完全覆盖。”
（2）CeFi 联手阻止黑客洗钱
对于非事件亲历者来说，最关心莫过于 Kucoin 被盗资产是否会砸盘影响市场。
从目前的情况来看，投资者暂可不必担心。
根据 Johnny Lyu 所述，事发后，Kucoin 第一时间联系了多家加密平台，请求帮助冻结被盗资金，包括 Binance、Huobi、OKEx、Bybit、Upbit、Bibox、Gate、MXC、BitMax、BigONE、BKEX、BitZ、HBTCHoo、Crypto.com、Bingbon、Renrenbit、LBank、Max / Maicoin、CoinW 等。
今天上午，包括抹茶、Gate.io 在内的多家交易所发布公告，暂停相关被盗代币的充提币。得益于此，相关代币价格并未出现暴跌，加密市场也并未受到此次被盗事件影响。
就连一向置身事外的 Tether 这次也开始出手打击黑客。
Bitfinex 首席技术官 Paolo Ardoino 发文称，Bitfinex 已经冻结 KuCoin 交易所流出的 1300 万EOS 链上 USDT，Tether 也已经冻结攻击地址中的逾 2000 万以太坊链上 USDT。
对于为何出手相助，Paolo Ardoino 解释称：“Tether USDT 与其他稳定币一样是中心化稳定币，我们对用户、监管机构和执法部门负有责任，我们有严格的规则和行动的参数。”
（3）安全警钟长鸣
近年来，中心化交易所安全事故频发。
前有币安被盗 7000 多个比特币，近期中币网也因技术故障被撸走一些加密资产，再到今天的 Kucoin 私钥丢失。
一次次事故，暴露出中心化交易所在管理以及技术层面的漏洞，值得警惕。当然这并不是说去中心化交易所一定是安全的，DEX 也同样存在智能合约漏洞风险。
特别是这次的 Kucoin 事件，仍然留下很多谜团。比如，热钱包私钥是怎么泄漏的，被谁泄漏的？这次事故究竟还会不会再次重演？另外，黑客为什么第一时间转至中心化交易所洗钱，背后的身份能否查出？
Odaily星球日报也将继续关注事件动向。
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