Computer security is a type of computer technology that is concerned with protecting the information contained in computers and related networks. It involves the protection of information and related equipment from natural disasters, theft and fraud, but still enabling the information and equipment to be easily accessed and useful to its users.
Computer Security Methods
Computer security approaches are intended to protect the information of a program while not imposing restrictions on the uses of the program. Computer security may involve more than one method:
- Believe all the software will adhere to a specific security policy and the software in analyzed to determine that it is trustworthy.
- Believe all the software will abide to a specific security policy, but the software has been deemed untrustworthy, also called computer insecurity.
- Do not trust any software, but implement a security policy that contained trustworthy hardware devices
- Do not trust any software, but impose a security policy with devices that are untrustworthy, also called computer insecurity.
Many systems have involuntarily resulted in computer insecurity that have lead to breaches of security. Method number three is the most practical because it has a variety of degrees of freedom and avoids security breaches. A combination of method one and four is used frequently.
Security Systems Design
Many methods and strategies are used to design security systems and only a small number of effective approaches to improve security systems after they are designed.
- One method uses the principle of least privilege method, which results in the system only having the privileges required for function. This protects the system even if an intruder is able to access one component of the system, it is very difficult to access other areas.
- Some security systems separate the system into smaller parts to open the possibility of using various methods including automated theorem proving.
Computer system security is necessary to protect valuable and sensitive information from corruption, disintegration, and publication from unauthorized individuals.









