47. Viruses

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Last updated 3:33 AM on 6/19/25
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12 Terms

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Computer Virus

Malicious code that’s run on a machine without the user’s knowledge and this allows the code to infect the computer whenever it has been run

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Virus Types

Boot Sector

Macro

Program

Multipartite

Encrypted

Polymorphic

Metamorphic

Stealth

Armor

Hoax

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Boot Sector Virus
Stored in the first sector of a hard drive and is then loaded into memory whenever the computer boots up
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Macro Virus
A form of code that allows a virus to be embedded inside another document so that when that document is opened by the user, the virus is executed
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Program Virus
Tries to find executables or application files to infect with their malicious code
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Multipartite Virus
A combination of a boot sector type virus and a program virus
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Encrypted Virus
Designed to hide itself from being detected by encrypting its malicious code or payloads to avoid detection by any antivirus software
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Polymorphic Virus
Advanced version of an encrypted virus, but instead of just encrypting the contents, it will actually change the virus’s code each time it is executed by altering the decryption module in order for it to evade detection
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Metamorphic Virus
Able to rewrite itself entirely before it attempts to infect a given file
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Stealth Virus
Not necessarily a specific type of virus as much as it is a technique used to prevent the virus from being detected by the anti-virus software
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Armor Virus
Have a layer of protection to confuse a program or a person who’s trying to analyze it
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Hoax
A form of technical social engineering that tempts to scare end users into taking undesirable action on their system

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