Types of computer viruses

Computer virus refers to a malicious software that reproduces itself and replicates to a computer system and start to affect how computer system works.

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Types of computer viruses
Computer Virus Illustrations on Desk setup of programmer View (Image)

Computer virus refers to a malicious software that reproduces itself and replicates to a computer system and start to affect how computer system works. Virus manipulates how computer works without consent and permission of the owner. Purpose of virus is to gain access to admin passwords, access sensitive data or gain access to senstive e-mails. Viruses are created with intentions of destroying the purpose and goals of the computer system.

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Below are some examples of computer viruses used by hackers to gain unauthorised access to user's contents;

1.0 resident virus, refers to resident virus that stays in computer RAM and it affects how computer works. Common examples include randex and Meve 

2.0 Direct action virus, main function of these virus is to replicate and affect files, though they don't affect computer speed and also they don't delete files.

3.0 Browser hijacker this type of virus basicaly affects computer browser in which it interferes with how user is browsing with the machine.

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4.0 overwrite virus, it basically overwrites content hence affecting the original content.

5.0 Boot sector virus, mostly they affect floppy disk  and always come in existence in the floppy disk. some examples of floppy disk include polyboot.

6.0 Macro virus, it target softwares and applications that are contain macros. Examples of macro virus are bablas.

7.0 Encrypted virus this type of virus contain encrypted  malicious codes that are  hard to detect and they badly affect computer performance.

8.0 companion virus, they only occur when they are accompanied by a file, for them to run firts you need to open the file and badly affect computer performance.

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