According to Beosin EagleEye monitoring security public opinion monitoring data, more than 20 typical security incidents occurred in September, of which the total loss of attack security incidents exceeded 164.32 million US dollars. The Wintermute theft of $160 million in September was the largest loss in the recent Web3 field. This month, the loss caused by the leakage of the private key was huge. It is recommended that the project party need to improve security awareness and do a good job in wallets, off-chain system services, smart contracts, etc. Risk assessment and security audit of related modules, carefully use third-party tool components or services. In addition, there have also been a number of security incidents involving fraud by hot events this month, such as Elizabeth tokens, Ethereum mergers, sheep and sheep imitation games, etc. Users are advised to be vigilant and refuse to follow suit blindly to avoid being deceived.