YO Protocol experienced a significant abnormal transaction event on the Ethereum chain. According to the investigation by security audit firm BlockSec Phalcon, approximately $3.84 million worth of stkGHO in a single transaction was exchanged for only about $122,000 USDC, resulting in substantial value loss. After the incident, the protocol team quickly took remedial measures—purchasing GHO tokens and re-depositing them into the stkGHO pool in the vault.

The in-depth analysis by the auditing agency pointed out that the root cause of this abnormal transaction mainly stems from two aspects: first, the报价 provided by the transaction initiator was flawed; second, the slippage protection mechanism was effectively disabled at a critical point. This incident serves as a reminder to DeFi users and developers that in complex on-chain interactions, improper parameter settings can lead to serious consequences.