最近的闪电贷攻击 by missingwolf

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· @missingwolf ·
$5.52
最近的闪电贷攻击

“当你凝视深渊时,深渊也在凝视着你。”


可是,这一切真的都是因为闪电贷吗? 

北京时间 11 月 14 日 23 点 36 分,Value DeFi 的 MultiStables Vault 池子遭受黑客攻击,损失将近 740 万美金的 DAI。由于 Value DeFi 协议在使用基于 AMM 算法的价格预言机(Curve)来计算代币价格时存在漏洞。攻击者先通过闪电贷操纵 Curve 上通证的价格,然后再用铸造的 pooltokens 成功提取出了远超原先价值的 3CRV 通证。之后,攻击者再将这些 3CRV 通证在 Curve 上赎回 DAI,从而完成获利。 

11 月 13 日, DeFi 借贷协议 Akropolis 协议遭受黑客攻击,损失约 200 万 DAI,Akropolis创始人兼首席执行官Ana Andrianova表示,攻击者利用在衍生品平台 dYdX 的闪电贷进行重入攻击。攻击者使用自己构造的通证,对 Akropolis 合约的 deposit 函数进行重入,导致 Akropolis 合约使用相同的差值铸币了两次,但是只触发了一次转账,当攻击者提现的时候,就可以提两倍的收益,从而获利。 

11 月 7 日凌晨 3 时 22 分,黑客利用闪电贷(Flash loan)通过一笔交易攻击一家去中心化数字银行 Cheese Bank 获利 330 万美元。PeckShield 通过追踪和分析发现,攻击者首先通过 dYdX 闪电贷贷出大笔 ETH。随后,在 Uniswap V2 中将 50 枚 WETH 兑换为 107,000 枚 CHEESE(Cheese Bank 通证)。Cheese Bank 以流动性矿池 UNI_V2-CHEESE-ETH 中 WETH 的数量来衡量所对应的 UNI_V2 LP 凭证的价格,攻击者通过提高 UNI_V2 LP 凭证的价格能有效地贷出更多 USDC、USDT、DAI。最后,攻击者在将 ETH 归还给 dYdX 闪电贷后获得巨额套利收益。 

10 月 26 号,Harvest Finance 项目遭受闪电贷攻击,损失约 2400 万美元。黑客发起的此次经济攻击是通过 Curve Y 池进行的。黑客通过闪电贷瞬间操纵了 Curve 上稳定币的汇率,然后在 Harvest 低价充值某稳定币、并在 Curve 购回所卖出的稳定币,恢复正常汇率,Harvest 提现,赚取汇率差。

# 本帖 steem 首发  
[ 最近的闪电贷攻击 ](https://steemit.com/@missingwolf/20201202gong)   
    
# 最近新帖         
1.  [ 利用智能合约的漏洞以及闪电贷的特性进行套利 ](https://steemit.com/@missingwolf/20201202shan)   
2.  [ defi反数字加密货币金融化 ](https://steemit.com/@missingwolf/20201130fan)  
2.  [ AC多个项目接连翻车 ](https://steemit.com/@missingwolf/20201126ac)  
2.  [ 88mph上线仅48小时就遭到了攻击 ](https://steemit.com/@missingwolf/20201122nph) 
2.  [ UNI挖矿结束,TVL暴跌11亿美元 ](https://steemit.com/@missingwolf/20201118uni) 
2.  [ 其他公链发展DeFi的特点 ](https://steemit.com/@missingwolf/20201114gong) 
2.  [ 构造DeFi全领域生态的顶级底层基础 ](https://steemit.com/@missingwolf/20201110ding)
2.  [ B.Protocol的DeFi协议上线 ](https://steemit.com/@missingwolf/20201106defi)
2.  [ 伊尹不仅是辅佐汤夺取天下 ](https://steemit.com/@missingwolf/20201102xia)
2.  [ 徐光启撰写《农政全书》 ](https://steemit.com/@missingwolf/20201027nong)  
2.  [ 山、非山、还是山 ](https://steemit.com/@missingwolf/20200704sancong)  
2.  [ 人的三六九等 ](https://steemit.com/hive-165526/@missingwolf/20200604san)                          
2. [ 说与不说的自由 ](https://steemit.com/hive-165526/@missingwolf/20200604talk)  
3. [ 领袖和蠢货 ](https://steemit.com/hive-165526/@missingwolf/20200524lingxiu) 
2. [ 克服 ](https://steemit.com/hive-165526/@missingwolf/20200514kefu)   
2. [ 你执着,我不弃 ](https://steemit.com/hive-165526/@missingwolf/20200511buqi)  
2. [ 你既喜欢,我不拒绝 ](https://steemit.com/hive-165526/@missingwolf/20200511buju)  
2. [ 爱,但别溺爱 ](https://steemit.com/hive-165526/@missingwolf/20200511niaibu)  
2. [ 溺爱 ](https://steemit.com/hive-165526/@missingwolf/20200511niai)  
2. [ 妥协 ](https://steemit.com/hive-165526/@missingwolf/20200507tuoxie) 
2. [ 战争 ](https://steemit.com/hive-165526/@missingwolf/20200506war)        
1. [ 不自由 ](https://steemit.com/hive-165526/@missingwolf/20200504buziyou)     
1. [ 自由 ](https://steemit.com/hive-165526/@missingwolf/20200504ziyou)   
1. [ 手机 ](https://steemit.com/hive-165526/@missingwolf/shouji20200425)     
1. [ 无题:我是诗人 ](https://steemit.com/hive-165526/@missingwolf/wuti20200423)  
 

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