With the expansion of computer and network applications, the dangers and losses faced by computer information security are also increasing exponentially. Especially with the increase in various types of hackers, some individual users are often attacked by different means, which cannot help but引起our attention. For individual users, apart from viruses and Trojans, invisible codes in web pages have also begun to seriously threaten our security. However, most people lack self-protection awareness and have insufficient understanding of the hazards of invisible codes.