What happens when you ignore the slip? A businessman received only 50 million dollars in exchange

Despite clear warnings, one trader approved a massive $50 million swap and received a total of 324 Aave tokens.

On March 12, a user tried to buy AAVE token worth 50 million dollars of Tether through the Aave interface, but the trade ended badly after the user received a warning about a sharp slide.

According to Aave Labs founder and CEO Stany Kulechov, the transaction involves a single order of significant size placed through the Aave interface, which integrates the routing infrastructure provided by CoW Swap. Due to the unusual size of the order, the interface displayed a warning about the unusual slip and required explicit confirmation before the exchange could continue.

A $50 million trade went wrong

The notification appeared as a confirmation box that the user had to manually accept before completing the transaction. Kulechov said the user confirmed the alert on a mobile device and continued trading despite the swipe alert. Due to the execution and liquidity conditions available through the route, the user ultimately received only 324 AAVE tokens for the $50 million USDT order.

Kulechov argued that a transaction cannot proceed without a clear acknowledgment of the user’s awareness and acceptance of the associated risks through the interface. He said the routing infrastructure worked as designed and the integration with CoW Swap followed standard practices commonly used in the DeFi sector.

However, the bottom line performance was significantly worse than what would normally be expected in a more liquid market environment. Kulechov noted that incidents involving high slippage can occur in DeFi when users attempt to make transactions that are much larger than the liquidity available in the respective markets, although he said the scale of this particular transaction is much larger than what is typically seen in the space.

Reacting to the incident, the executive said that the Aave team sympathizes with the user and will try to get in touch with them. He added that the protocol plans to return about $600,000 in fees collected from transactions. Kulechov said that while the permissionless nature of DeFi remains important to maintain, the industry can still build additional walls to reduce the likelihood of similar incidents in the future.

User freedom and protection

CoW Protocol, a DEX aggregator, reached out to X and explained that “blocking users from trading removes choice and can lead to dire results in some cases.” It also added that tradeoffs like these show that “DeFi UX is not yet where it needs to be to protect all users. As a group, we are now looking at how we balance strong safeguards with preserving user autonomy.”

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The platform has stated that it will return any payments sent to CoW DAO.

The incident quickly sparked reactions in the crypto community. Prominent crypto analyst, Autism Capital, described the event as a “teachable moment about money.”

Meanwhile, another crypto commentator, KJ Crypto, questioned the motivation behind such a massive acquisition attempt, tweeting that it raises questions as to why anyone would want to acquire $50 million worth of Aave in a single transaction.