A shocking incident has just occurred in the cryptocurrency community, where a crypto "whale" reportedly lost nearly $50 million simply by executing a swap order of USDT stablecoin for AAVE DeFi Token through the AAVE Labs platform interface. The incident quickly attracted market attention as the loss was not due to hacking or a smart contract error, but rather to massive slippage during the transaction.
Chia to founder and CEO Stani Kulechov , this user attempted to buy AAVE with approximately 50 million USDT in a single order. Due to the enormous transaction size, the interface displayed a clear warning about the unusual slippage – a common mechanism to help traders recognize the risk when market liquidation is insufficient to absorb the order. However, the user still confirmed the trade on their mobile device, accepting the high slippage and ultimately receiving only about 324 AAVE, resulting in a huge loss.
In the DeFi market, slippage is the difference between the expected price and the actual price when an order is executed. This often occurs when volume is too high or the liquidation pool is too thin. Analysts believe this could be one of the biggest trading errors ever recorded. Last year, a trader lost hundreds of thousands of dollars when swapping approximately $733,000 worth of USDC stablecoins and only receiving about 19,000 USDT due to a sandwich attack.
The decentralized exchange platform CoW Swap – which is integrated with AAVE – also stated that there were initial indications of protocol exploitation or malicious attack. Transactions were executed correctly according to the parameters signed by users, and the interface displayed clear warnings about Price Impact for large swap orders. The organization said it is continuing to review on-chain data to further clarify the situation.
On AAVE part, the development team expressed sympathy with users and is trying to contact them to refund approximately $600,000 in transaction fees collected from this event. This move has been positively received by the community in the context of increasingly competitive DeFi and the need for projects to strengthen user experience protection.
