According to the data of French Open, the Public Security Bureau can find people through WeChat. Because the current micro-signal must be bound with the mobile phone number, and the mobile phone number and other information will always be used in the process of using WeChat, all personal WeChat information will be stored in Tencent's internal server. However, Tencent is obliged to cooperate with public security organs to investigate user information only when it involves major criminal cases and cases endangering national security.