Protection and security in operating system
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Protection and Security in Operating System
Computer ScienceMCAOperating System
Answered on 24th Aug, 2018
Protection and security requires that computer resources such as CPU, softwares, memory etc. are protected. 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.
Threats to Protection and Security
A threat is a program that is malicious in nature and leads to harmful effects for 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 further by replicating themselves as required.
Trojan Horse
A trojan horse can secretly access the login details of a system. Then a malicious user can use these to enter the system as a harmless being and wreak havoc.
Trap Door
A trap door is a security breach that may be present in a system without the knowledge of the users. It can be exploited to harm the data or files in a system by malicious people.
Worm
A worm can destroy a system by using its resources to extreme levels. It can generate multiple copies which claim all the resources and don't allow any other processes to access them. A worm can shut down a whole network in this way.
Denial of Service
These type of attacks do not allow the legitimate users to access a system. It overwhelms the system with requests so it is overwhelmed and cannot work properly for other user.
Protection and Security Methods
The different methods that may provide protect and security for different computer systems are
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