Computer network security countermeasures based on big data

With the rapid development of science and technology in China, high-tech information technology is constantly developing and exploring, and is widely used in human work and life. Among them, computer technology based on big data is more representative. Big data technology is a technology of searching and analyzing collected information, which can solve many problems. Nowadays, big data technology plays an important role in construction, finance, trade and other fields. The increasingly innovative social demand puts forward new challenges to the development and application of computers, as well as new requirements for computer users. Network security is the basis of good application of computer technology. At the same time, “the wind of big data” also leads to many security problems. In view of the problems existing in the computer network in the era of big data, this paper studies how to effectively solve these problems, and uses data encryption technology to prevent them. The experimental results show that the data encryption technology can be effectively applied in the field of computer network security protection, and the accuracy rate of data information is as high as 95.3%. Hope to provide some help to the staff and users in related fields.