Difference between protection and security in operating system pdf
- Protection and Security in Operating System
- Difference between Security and Protection
- What is the Difference Between Protection and Security
Protection and Security in Operating System
Operating System Securityand
The main difference between protection and security is that the protection focuses on internal threats in a computer system while security focuses on external threats to a computer system. An operating system provides a mechanism to prevent interference with logical and physical resources. Protection and security are two of them. Although these two words are used interchangeably, there is a distinct difference between protection and security. Protection deals with the internal threats of the system. Assume an example as follows. There are four users in a computer system.
Protection and security requires that computer resources such as CPU, softwares, memory etc. This extends to the operating system as well as the data in the system. This can be done by ensuring integrity, confidentiality and availability in the operating system. The system must be protect against unauthorized access, viruses, worms etc. A threat is a program that is malicious in nature and leads to harmful effects for the system.
In computer sciences the separation of protection and security is a design choice. Wulf et al. In this design, security policies rely therefore on the protection mechanisms and on additional cryptography techniques. The major hardware approach  for security or protection is the use of hierarchical protection domains. Prominent example of this approach is ring architecture with " supervisor mode " and "user mode". Therefore, the choice to distinguish between protection and security in the overall architecture design implies rejection of the hierarchical approach in favour of another one, the capability-based addressing.
Difference between Security and Protection
What is the Difference Between Protection and Security