Differences between virus, worm, Trojan horse and rootkit:

Virus Worm Trojan horse Rootkit
It is a program that damages a computer or mobile device by changing the way it functions.
It is a malware computer program that lives in the memory which replicates itself in order to spread to other computers and devices.
It is a destructive program that which disguised as an original program. It is a program that allows other persons to take care of another person’s computer remotely.

This program is injected into one’s computer without their knowledge and once it is injected, it spreads and damages many of the files, applications, and even the operating system...

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Chapter 4, Problem 21CT

Chapter 4, Problem 23CT

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Virus	Worm	Trojan horse	Rootkit
It is a program that damages a computer or mobile device by changing the way it functions.	It is a malware computer program that lives in the memory which replicates itself in order to spread to other computers and devices.	It is a destructive program that which disguised as an original program.	It is a program that allows other persons to take care of another person’s computer remotely.
This program is injected into one’s computer without their knowledge and once it is injected, it spreads and damages many of the files, applications, and even the operating system...

Solution Summary: The author explains the differences between virus, worm, Trojan horse, and rootkit.

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