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网络安全主要是保障个人数据或企业的信息在网络中的保密性、完整性、不可否认性,防止信息的泄露和破坏,防止信息资源的非授权访问。对于网络管理者来说,网络安全的主要任务是保障合法用户正常使用网络资源,避免病毒、拒绝服务、远程控制、非授权访问等安全威胁,及时发现安全漏洞,制止攻击行为等。从教育和意识形态方面,网络安全主要是保障信息内容的合法与健康,控制含不良内容的信息在网络中的传播。
Network security is mainly to protect personal data or corporate information in the network of confidentiality, integrity, non-repudiation, to prevent the disclosure and destruction of information, to prevent unauthorized access to information resources. For network managers, the main task of network security is to protect legitimate users from using network resources normally, avoiding security threats such as virus, denial of service, remote control and unauthorized access, timely detecting security holes, and stopping attacks. In terms of education and ideology, cybersecurity mainly ensures the lawfulness and health of information content and controls the dissemination of information containing bad content on the Internet.