Application of Collaborative Filtering Algorithm in Computer Network Security Technology Evaluation

After entering the 21st century, with the rapid development of the economy, people's living standards are also constantly improving, especially the use and popularization of computers. Computers have penetrated into every aspect of people's lives and work, and the use of networks is also becoming increasingly widespread. This is a new challenge to computer networks. For example, virus intrusion, malicious code, massive sending of malicious information, data theft, data leakage, and other issues are becoming increasingly serious. At present, billions of computer viruses have been invaded globally, causing great impact on people's daily lives and posing great harm to computer systems. The prevention and control of computer virus has become a hot issue in many countries and regions in the world. The security protection of computer networks is the key to ensuring their normal operation and normal operation. Currently, the security of computer networks is a very important issue. The article mainly discussed the security of computer networks in the following aspects.