Enso Discloses Malicious Liquidity Pool Attack, Curve Pool Causes Approximately $225,000 in Inflated Quotes

Odaily Planet Daily News: DeFi infrastructure company Enso disclosed in a report on July 16 a type of malicious liquidity pool known as “toxic pools,” which manipulates transaction simulations to return false optimal quotes to wallets and DEX aggregators, altering the logic during actual on-chain execution. Enso stated that the related malicious contracts can identify read-only simulation environments and return optimized prices, but when transactions are broadcast to the blockchain, they are executed at worse prices or result in transaction failures. A manipulated Curve pool processed over 129,000 exchanges, causing approximately $225,000 in inflated quotes, while more than 37,000 transactions were rolled back, consuming nearly $30,000 in gas fees. On Polygon, a malicious Uniswap v4 hook attracted routing systems with false exchange rates, subsequently triggering a 99.1% transaction failure rate. Enso announced that it has updated its execution protection product, Enso Shield, to detect false quotes in Ethereum and Polygon environments.