New DeFi Trap Uses Fake Quotes to Trick Traders

A report from Enso has revealed that some decentralized finance liquidity pools are using deceptive tactics to manipulate trade execution. These toxic pools show attractive prices when trading apps simulate a swap. However, once the transaction is sent to the blockchain, the actual result is much worse for the user.

This trick targets the way wallets and aggregators find the best prices. Because these systems simulate trades before confirming them, attackers design their pools to look profitable during the simulation phase. This bait and switch leaves users with poor execution results that differ significantly from the original quote.

Enso documented specific cases involving Curve and Uniswap pools. In one instance, a manipulated pool on Ethereum processed over 129,000 trades at disadvantageous rates. These attacks cost users roughly $225,000 in lost value and wasted gas fees. While the specific pools identified have since gone inactive, the researchers noted that the same operators are likely still active.

This issue highlights a growing concern regarding transaction integrity in crypto. As price discovery becomes more efficient, the focus must shift toward verifying that the final execution matches the initial quote. Traders should remain cautious, as these pools can alternate between honest and malicious behavior to avoid detection by simple checks.