MEV Bot Profits $10M from $50M Aave Swap Mishap
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James Mitchell combines investment banking with cryptocurrency journalism to analyze the institutional adoption of digital assets. Specializing in ETFs and regulation, he translates complex developments…
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A recent incident within the decentralized finance ecosystem saw a crypto user lose millions during an attempted swap on the Aave platform. Concurrently, a Maximal Extractable Value (MEV) bot capitalized on this misstep, netting itself nearly $10 million.
On Thursday, a wallet funded by Binance attempted to convert an impressive $50.4 million in USDt (USDT) into Aave (AAVE) tokens through the CoW Protocol and SushiSwap. However, this ambitious transaction took an unexpected turn.
The outcome was disastrous for the user, who ended up receiving only 327 AAVE tokens—worth roughly $36,000—despite the hefty investment. Etherscan reported that the user paid an astonishing $154,000 for each AAVE token, significantly higher than the market price, which hovered around $114.
The situation was exacerbated by a MEV bot that employed a tactic known as a “sandwich attack.” These bots monitor pending blockchain transactions, and in this case, expertly targeted the substantial AAVE order to increase the token’s price prior to the user’s transaction.
To enact this strategy, the bot quickly borrowed $29 million worth of wrapped Ether (ETH) tokens from Morpho, subsequently inflating the AAVE price by executing a purchase on Bancor. The bot then offloaded the inflated tokens on SushiSwap, earning a profit of $9.9 million.
Stani Kulechov, the founder of Aave, noted that the platform’s interface had issued a warning about the “extraordinary slippage” that could affect the transaction due to its size. He mentioned that the user had acknowledged this warning on their device but chose to proceed regardless.
Aave’s communication stated that the user confirmed their awareness of the potential loss. Despite efforts from CoW DAO to facilitate transactions, they highlighted that the risk inherent was pronounced.
Furthermore, CoW DAO reiterated that the user had explicitly opted to engage in the trade after seeing the warnings about potential losses. They asserted that no decentralized exchange could have completed such a trade without significant cost to the user.
In response to the situation, Aave’s Kulechov expressed sympathy towards the affected user and indicated that the protocol would attempt to return approximately $600,000 in fees accrued from the transaction.
CoW DAO addressed concerns about the current state of user experience in DeFi, asserting that enhancements are essential to shield users from similar risks. They proposed that while decentralized finance should remain accessible and unrestrained, introducing protective measures is vital for user safety.
This incident serves as a cautionary tale for users navigating the complexities of DeFi, emphasizing the crucial need for vigilance and understanding within the evolving blockchain landscape.
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