WORM
is a program that copies itself repeatedly, for example in memory or on a network, using up resources and possibly shutting down the computer or network.
COMPUTER VIRUS
is a potentially damaging computer program that affects, or infects, a computer negatively by altering the way the computer works without the user’s knowledge.
it can spread throughout and may damage files and system software, including the operating system.
TROJAN HORSE
Is a program that hides within or looks like a legitimate program.
it can spread throughout and may damage files and system software,
ROOTKIT
Is a program that hides in a computer and allows someone from a remote location to take full control of the computer.
The rootkit author can execute programs, change settings, monitor activity, and access files on the computer.
Copy and paste from lecture note .. by person sit next to syafiq
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