In life, security problems are inevitable, big and small, and security knowledge can help us resolve some of the small security problems。
I. The concept of cybersecurity
Network security refers to the operationalization of network systems through the application of a variety of technical and managerial measures to ensure the availability, integrity and confidentiality of network data. The specific meaning of cybersecurity will change with the change in the angle. For example, from the point of view of users (individuals, businesses, etc.), information that they wish to have about the privacy or commercial interests of individuals is protected by confidentiality, integrity and authenticity when transmitted on the internet。
Ii. Key features of cybersecurity
Cybersecurity should have five characteristics:
1. Confidentiality: the characteristics of information not disclosed to or used by unauthorized users, entities or processes。
Completeness: data characteristics that cannot be changed without authorization. That is, the information retains unmodified, undamaged and lost features during storage or transmission。
3. Availability: features that can be visited by authorized entities and used as required. That is, access to the required information when required. For example, denial of services in a network environment, disruption of the functioning of networks and related systems are attacks on usability
Controllability: controlling the dissemination and content of information。
5. Reviewability: providing the basis and means when security issues arise。
Tools and laws to ensure cybersecurity
The tools used to maintain cybersecurity consist of vieid, digital certificates, digital signatures and local or cloud-based antitoxic software. Legal aspects include the regulations of the people's republic of china on the security protection of computer information systems and the electronic signatures law of the people's republic of china。
Iv. Cybersecurity measures
1. Technical means of security
Physical measures: for example, protection of network-critical equipment (e. G. Switches, large computers, etc.), establishment of strict network security regulations, introduction of radiation protection, fire protection and installation of uninterrupted power (ups)。
Access control: strict authentication and control of user access to network resources. For example, user identification, encryption, updating and authentication of passwords, establishment of user access rights to directories and files, control of network equipment configuration, etc。
Data encryption: encryption is an important means of protecting data security. The role of encryption is to ensure that information is not understood after being intercepted. Prevention of computer network viruses and installation of network antivirus systems。
Network isolation: network segregation occurs in two ways, through the use of isolation cards and through the use of cyber-security barriers. The isolation cards are used mainly for the isolation of single machines and the gateways for the isolation of the entire network。
Other measures: information filtering, error tolerance, data mirroring, data backup and auditing. In recent years, many solutions have been proposed around cybersecurity issues, such as data encryption and firewall technology. Data encryption is the decryption of data transmitted in the network, which is then decrypted to the original data upon arrival at the destination, in order to prevent the diversion of information by illegal users. Firewall technology controls access to the network through isolation and restricted access。
2. Security awareness
Having cybersecurity awareness is an important prerequisite for ensuring cybersecurity. Many cyber-security incidents are associated with a lack of security awareness。
3. Host security checks
The first step in ensuring network security and building it is to have a comprehensive understanding of the system, to assess its security and to be aware of its own risks, in order to quickly and accurately address the issue of cybersecurity. The country's first innovative automated mainframe security inspection tool, developed by the antxian laboratory on its own initiative, completely subverts the redundancies of the operation of the traditional system's confidential inspection and system risk assessment tool, allowing for a full security clearance and accurate security level determination of the intranet machine and robust analytical disposal and repair of the evaluation system
