Wu said that according to the official announcement from Fusion (by IPOR), the IPOR team received an alert on January 6th and discovered that the Fusion optimizer Vault on Arbitrum experienced malicious trading. After investigation, it was found that the vulnerability resulted in a loss of 336,000 USDC. The attack targeted only a specific old version of the Fusion Vault, which due to its unique configuration, was the only one susceptible to such an attack. The loss accounts for less than 1% of Fusion's total funds. Currently, the IPOR team is working with relevant security agencies to track and recover the funds. Meanwhile, the IPOR DAO will compensate for the losses through its treasury reserves, and all affected depositors will be fully reimbursed. Other Fusion Vaults are unaffected.