On November 13th, Unocoin, a long-established Indian cryptocurrency exchange, issued a security incident report stating that BitGo had frozen its corporate accounts as requested on November 6th, and the freeze was effective. However, the previously discovered abnormal on-chain transactions were signed and broadcast directly outside the BitGo platform, bypassing the BitGo system. Unocoin explained that its multisig wallet has a backup access mechanism, allowing users to access their crypto assets even if BitGo is unavailable. It is suspected that this mechanism was exploited by attackers. The company is further investigating the specific attack path, the scale of crypto asset loss, and the extent of information leakage. Platform services have not yet been restored. https://wublock123.com/news/unocoin-hacker-transfer-path-bitgo-multisig-backup-exploit-71897