Legal basis: Article 25 of the National Security Law of People's Republic of China (PRC) establishes a network and information security guarantee system, enhances the network and information security protection capability, strengthens the innovative research, development and application of network and information technology, and realizes the security and controllability of network and information core technologies, key infrastructure and information systems and data in important fields; Strengthen network management, prevent, stop and punish cyber crimes such as cyber attacks, cyber intrusions, cyber theft and dissemination of illegal and harmful information according to law, and safeguard the sovereignty, security and development interests of national cyberspace.