CoW Swap: User Refunded Transaction Fee for Buying AAVE Due to Slippage Loss Exceeding $50 Million

BlockBeats News, March 13, CoW Swap responded to "User Buys AAVE and Slippage Loss Exceeds $50 Million": Earlier today, a trader attempted to exchange 50 million aEthUSDT for aEthAAVE via the Aave exchange interface (supported by the CoW Protocol). Despite a clear warning indicating that the user would lose almost all of the trade value and must explicitly choose to proceed with the transaction after seeing the warning, the user chose to proceed with the exchange.

It should be noted that the CoW Protocol is a decentralized trading platform aggregator that routes trades through nearly all major public and private liquidity sources. No single DEX, DEX aggregator platform, public liquidity pool, or private liquidity pool (or combination thereof) could have executed this trade at a price anywhere close to reasonable.

Preventing users from making trades would deprive them of choice and could lead to serious consequences in some cases (such as a market collapse). That being said, such trades highlight that the DeFi user experience has not yet reached a level where all users are protected. As a team, we are reassessing how to strike a balance between robust safeguards and preserving user autonomy. We will also refund any fees paid to the CoW DAO due to this transaction.