Malicious Uniswap v4 Hooks Are Tricking DeFi Traders With Fake Quotes.
Crypto infrastructure firm 0x has warned of a sharp rise in malicious Uniswap v4 hooks that attract traders with favorable swap quotes before delivering significantly worse execution.
In some extreme cases, users reportedly received up to 50% fewer tokens than the amount shown in the initial quote. Since aggregators typically route trades toward the most attractive displayed price, malicious liquidity can exploit the comparison process by appearing cheaper during simulation and changing behavior when the transaction settles.
0x analyzed 84,163 hooks across six chains, classifying 54.2% as malicious, 26.4% as likely malicious and only 19.4% as safe as of September 11. One Base-based hook reportedly collected $143,037 in fees, with charged fees reaching an 18% median.
The issue highlights a growing challenge for permissionless DeFi: the best displayed quote may not always produce the best final outcome. Wallets and routers may increasingly need vetted-liquidity labels, execution-time checks and on-chain settlement comparisons to protect users from toxic pools.
$BTC $SYN #BTC Price Analysis# #UNI
Crypto infrastructure firm 0x has warned of a sharp rise in malicious Uniswap v4 hooks that attract traders with favorable swap quotes before delivering significantly worse execution.
In some extreme cases, users reportedly received up to 50% fewer tokens than the amount shown in the initial quote. Since aggregators typically route trades toward the most attractive displayed price, malicious liquidity can exploit the comparison process by appearing cheaper during simulation and changing behavior when the transaction settles.
0x analyzed 84,163 hooks across six chains, classifying 54.2% as malicious, 26.4% as likely malicious and only 19.4% as safe as of September 11. One Base-based hook reportedly collected $143,037 in fees, with charged fees reaching an 18% median.
The issue highlights a growing challenge for permissionless DeFi: the best displayed quote may not always produce the best final outcome. Wallets and routers may increasingly need vetted-liquidity labels, execution-time checks and on-chain settlement comparisons to protect users from toxic pools.
$BTC $SYN #BTC Price Analysis# #UNI
