Tragic! A whale lost $50 million exchanging currency on Aave due to "extreme slippage".

Earlier today (13th) , a whale attempted to exchange 50 million USDT for AAVE tokens through the Aave front-end interface. However, due to severe liquidity shortages, it only received 324 AAVE tokens, worth approximately US$36,000. This marks one of the most severe single losses in cryptocurrency history caused by "slippage".

Why did I press confirm even though there was a warning?

According to on-chain records, the transaction was initiated through the Aave interface and routed through the decentralized transaction aggregator CoW Protocol (formerly CoW Swap).

Because this $50 million order was far beyond the market's liquidity capacity, the Aave interface displayed an extreme slippage warning before the transaction and required the user to check a confirmation box to continue. However, the user still checked the confirmation box on their mobile device, accepting the inevitable loss.

"Slippage" refers to the difference between the price a trader expects to pay and the price that actually occurs. Slippage can widen dramatically when a single order is too large or when market liquidity is insufficient, and this situation is an extreme case that combines both.

CoW Protocol: Transactions are executed upon user signature.

As the routing protocol for this transaction, CoW Protocol subsequently issued a statement indicating that the transaction was executed exactly as the user-signed order key was, and that the system had provided clear price impact warnings before the transaction.

Earlier today, a trader attempted to exchange 50 million aEthUSDT for aEthAAVE through Aave's exchange interface (which is based on the CoW protocol).

Despite the system clearly warning the user that this operation would result in the loss of almost all the transaction value, and that the user still needed to make a clear choice whether to proceed with the transaction after seeing the warning, the user still chose to continue the exchange.

In other words, from a protocol perspective, this is not a technical glitch or a hack, but rather the result of users confirming and executing transactions despite receiving explicit warnings. However, the official statement also noted: "These types of transactions demonstrate that the DeFi user experience still does not meet the level required to protect all users. Currently, our team is researching how to strike a balance between strong security measures and maintaining user autonomy."

Aave: Willing to refund $600,000 in fees

While Aave itself was not at fault in this incident, the official team expressed sympathy for the user. Aave stated that it is actively trying to contact the whale and is willing to refund the approximately $600,000 in transaction fees collected from the deal. However, compared to the nearly $50 million in losses, the $600,000 refund is merely a drop in the bucket.

This incident once again highlights a key risk in DeFi trading: even if the interface provides sufficient risk warnings, a single oversight or misjudgment by a user can lead to irreversible and catastrophic consequences.

This is also a cautionary tale for all DeFi users: be sure to pay attention to slippage or execute large transactions in batches, and carefully assess the risks of investing all funds at once for exchange.