The grading is mainly rectified according to the basic requirements of the national standard information security technology network security level protection. For the working process and details of the guarantee, please see: https://luozhonghua.blog.csdn.net/article/details/130465356?spm=1001.2014.3001.5502
5 Overview of network security level protection
5.1 Level protection objects
Level protection objects refer to the objects in the network security level protection work, usually referring to the collection and storage of information composed of computers or other information terminals and related equipment according to certain rules and procedures , transmission, exchange, and processing systems, mainly including basic information networks, cloud computing platforms/systems, big data applications/platforms/resources, Internet of Things (IoT), industrial control systems, and mobile Internet technology-based
system etc. The level of protection objects is based on their importance in national security, economic construction, and social life, and the degree of harm to national security, social order, public interests, and the legitimate rights and interests of citizens, legal persons, and other organizations after being destroyed, from low to high It is divided into five security protection levels. See GB/T 22240 5.2 Security Protection Capabilities of Different Levels
for the determination method of the security protection level of the protected object The basic security protection capabilities that the protected objects of different levels should possess are as follows: