In the digital age, it is essential to protect the security of personally identifiable information. There are many illegal methods in the online world that may threaten the security of our digital identity, including but not limited to phishing emails, malware, social engineering attacks, data leakage incidents, etc. We must be vigilant and take effective measures such as using complex passwords, enabling two-factor authentication, regularly updating software, and handling personal information carefully to prevent risks. Relevant state departments are also continuously strengthening the construction of cyber security laws and regulations, cracking down on cybercrime activities, and protecting the security of citizens' personal information. We should actively cooperate to jointly maintain a clear cyberspace.