Ethereum

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 While Ethereum-based protocols have been hit with the majority of the exploit activity, BNB Smart Chain has also seen similar "copycat" exploits, according to BlockSec. 
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 The BNB Smart Chain (BSC) has reportedly suffered <a rel="noopener noreferrer nofollow" title="copycat" href="https://thebittimes.com/tag/copycat.html">copycat</a> attacks due to a vulnerability in the Vyper programming language, following a similar vein to the <a rel="noopener noreferrer nofollow" title="exploit" href="https://thebittimes.com/tag/exploit.html">exploit</a> on the decentralized finance (DeFi) protocol Curve Finance. 
 Amid the <a rel="noopener noreferrer nofollow" title="exploit" href="https://thebittimes.com/tag/exploit.html">exploit</a>s carried out on Ethereum, Blockchain security firm BlockSec tweeted on July 30 that around $73,000 worth of cryptocurrencies on BSC across three <a rel="noopener noreferrer nofollow" title="exploit" href="https://thebittimes.com/tag/exploit.html">exploit</a>s had also been stolen. 
 It comes as&nbsp;similar <a rel="noopener noreferrer nofollow" title="exploit" href="https://thebittimes.com/tag/exploit.html">exploit</a>s targeting liquidity pools on Curve Finance have racked up losses exceeding $41 million according to current BlockSec estimates. 
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 The sheet updated. Losses have already ~$41m!https://t.co/lCaS4uEPzm https://t.co/stQYNJFS7y pic.twitter.com/P7jG8NHnV4— BlockSec (@BlockSecTeam) July 30, 2023 
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 The vulnerability was caused by a malfunctioning reentrancy lock on Vyper versions 0.2.15, 0.2.16 and 0.3.0, which is used by a number of DeFi pools. 
 The programming language is believed to be one of the most widely used for Web3 projects and was designed for Ethereum Virtual Machines (EVMs) and could affect other protocols that use the afflicted Vyper versions. 
 Since news of the <a rel="noopener noreferrer nofollow" title="exploit" href="https://thebittimes.com/tag/exploit.html">exploit</a> broke, white hat and black hat hackers have been duking it out on-chain attempting to disrupt each other's <a rel="noopener noreferrer nofollow" title="exploit" href="https://thebittimes.com/tag/exploit.html">exploit</a> attempts or efforts to recover funds. 
 Related: Pond0X token launch snafu leads to millions of dollars in losses 
 One potential whitehat, known as “c0ffebabe.eth,” was seemingly able to grab some funds to store for safekeeping. On July 30 they sent an on-chain message asking affected protocols to contact them to organize returning funds. 
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 Excellent news!!! hopefully we can get it backhttps://t.co/sElKdYniT1 pic.twitter.com/AEldRorQaq— Addison (@0xaddi) July 30, 2023 
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 So far, the wallet has returned nearly 2,900 Ether (ETH) worth over $5 million to Curve according to one transaction. 
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 5M returned back to @CurveFinance pic.twitter.com/BPAvE1ZOZY— KGJR (@KGJRTG) July 30, 2023 
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 Another transaction saw c0ffebabe.eth move 1,000 ETH to what appears to be a newly-created wallet — likely the cold wallet which they mentioned earlier. 
 Hall of Flame: Wolf Of All Streets worries about a world where Bitcoin hits $1M 
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BNB Smart Chain hit with copycat Vyper attack, $73K exploited

TheBitTimes

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