On January 9th, the non-open-source contracts of Truebit Protocol were attacked, resulting in a loss of 8,535.36 ETH. The attacker exploited contract vulnerabilities to mint TRU tokens and extract a large amount of ETH. After analysis, the Beosin team traced the stolen funds, which are currently stored in two high-risk addresses. It is recommended that the project team upgrade and conduct security audits on the non-open-source contracts to prevent similar incidents.