Protection and Security of OS

Protection and Security of OS   Protection and Security is to provide a protection to computer system resources such as CPU, memory, disk, software programs, and most importantly data/information stored in the computer system. 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. If a computer program is run by an unauthorized user, then he/she may cause severe damage to the computer or data stored in it. The system must be protect against unauthorized access, viruses, worms etc. Threats to Protection and Security A threat is a program that is malicious in nature and leads to harmful effects on the system. Some of the common threats that occur in a system are   Virus Viruses are generally small snippets of code embedded in a system. They are very dangerous and can corrupt files, destroy data, crash systems, etc. They can also spread...