QuzletTest Review Game: http://quizlet.com/13194142/unit-6-viruses-destructive-programs-test-review-flash-cards/
A Virus is a computer program written to alter the way a computer operates without the permission or knowledge of the user.
4. Virus Classifications
Virus Types/Classification
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Description
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1. Trojan Horse
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Has the appearance of having a useful and desired function. Secretly the program preforms undesired functions. Does not replicate itself.
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2.Worms
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A program that makes copies of itself through disk to disk or through email.
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3. Bootsector Virus
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Attaches itself to the first part of the hard disk that is read by the computer during the boot up process.
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4. Macro Virus
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Uses another application’s macro programming language to distribute themselves. The infect documents such as MS Word, Excel, etc.
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5. Memory Resident Viruses
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Viruses that reside in a computers RAM. They stay in memory after its initiating program closes.
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6. Rootkit Virus
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An undetectable virus which attempts to allow someone to gain control of a computer system. Disguised as operating system files.
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7.Polymorphic Viruses
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Copies itself by creating multiple files of itself. It changes its signature making it had for antivirus software to detect.
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8. Logic Bombs/Time Bombs
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Programmed to initiate at a specific date or when a specific event occurs.
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