System security mainly refers to the application of system security engineering and system security management methods within the system life cycle, identifying hidden dangers in the system, and taking effective control measures to minimize the risk, so that the system can operate within the prescribed limits. Achieve the best level of security within performance, time and cost.
#The operating environment of this article: Windows 7 system, Dell G3 computer.
System security refers to the application of system security engineering and system security management methods within the system life cycle to identify hidden dangers in the system and take effective control measures to minimize the risk, so that the system can perform at the specified level. Achieve the best level of safety within the scope of , time and cost.
The basic principle of system security is that in the conception stage of a new system, its security issues must be considered, and security work plans (system security activities) must be formulated and implemented. This belongs to pre-analysis and pre-protection, which is different from traditional The way of analyzing and accumulating accident experience after the incident is completely different. System safety activities continue throughout the entire system life cycle until the system is retired.
Extended information:
Complex systems are often composed of tens of millions of elements, and the elements are connected by very complex relationships. The processes being studied, manufactured or used often involve high energy, and small errors in the system can lead to catastrophic accidents. The security issues of large-scale complex systems have attracted people's attention, so system security theories and methods have emerged.
According to the perspective of system security, there is no absolute safety in the world, and there are dangerous factors lurking in any human activity. Potential risk factors that can cause accidents are called hazard sources. They are faults of some objects, human errors, adverse environmental factors, etc. The possibility of a certain hazard source causing personal injury or material loss is called hazard, which can be measured by the degree of risk.
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