As a daily communication tool, the Internet messenger application provides a convenient way for the majority of Internet users to communicate. However, like any technical tool, they may also be abused by criminals for threats or fraud. In addition to sending malicious links, it also includes, but is not limited to, the following methods: personal threats through online anonymity, spreading rumors and falsifying information to frame, using social media to defraud personal information, sending viruses or malicious software to destroy equipment, harassment of inappropriate content, etc. The Chinese government attaches great importance to network security and personal information security, and has introduced a series of laws and regulations to combat cybercrime and protect the legitimate rights and interests of the people. We call on the majority of Internet users to raise their awareness of self-protection, not to trust unfamiliar information, not to spread illegal content, and jointly maintain a clear cyberspace.