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A computer virus is a small software program that attaches itself to a program or file. It is designed to spread from one computer to another and interfere with computer operation. To avoid viruses, it's essential that you have security software(antivirus).

Types Of Viruses

Trojan Horse:

A trojan horse program has the appearance of having a useful and desired function. While it may advertise its activity after launching, this information is not apparent to the user beforehand. Secretly the program performs other, undesired functions. A Trojan Horse neither replicates nor copies itself, but causes damage or compromises the security of the computer. A Trojan Horse must be sent by someone or carried by another program and may arrive in the form of a joke program or software of some sort. The malicious functionality of a Trojan Horse may be anything undesirable for a computer user, including data destruction or compromising a system by providing a means for another computer to gain access, thus bypassing normal access controls.

Worms:

A worm is a program that makes and facilitates the distribution of copies of itself; for example, from one disk drive to another, or by copying itself using email or another transport mechanism. The worm may do damage and compromise the security of the computer. It may arrive via exploitation of a system vulnerability or by clicking on an infected e-mail.

Bootsector Virus:

A virus which attaches itself to the first part of the hard disk that is read by the computer upon bootup. These are normally spread by floppy disks.

Macro Virus:

Macro viruses are viruses that use another application's macro programming language to distribute themselves. They infect documents such as MS Word or MS Excel and are typically spread to other similar documents.

Memory Resident Viruses:

Memory Resident Viruses reside in a computers volitale memory (RAM). They are initiated from a virus which runs on the computer and they stay in memory after it's initiating program closes.

Rootkit Virus:

A rootkit virus is an undetectable virus which attempts to allow someone to gain control of a computer system. The term rootkit comes from the linux administrator root user. These viruses are usually installed by trojans and are normally disguised as operating system files.

Polymorphic Viruses:

A polymorphic virus not only replicates itself by creating multiple files of itself, but it also changes it's digital signature every time it replicates. This makes it difficult for less sophisticated antivirus software to detect.

Logic Bombs/Time Bombs:

These are viruses which are programmed to initiate at a specific date or when a specific event occurs. Some examples are a virus which deletes your photos on Halloween, or a virus which deletes a database table if a certain employee gets fired.

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10y ago
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13y ago

Many the only ones I know of are just a small handfull of how many there could possibly be (torojan horse, some kind of weird name like Bot ___, and a few others) the closest number is 300

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16y ago

main types of Computer Viruses are, transient virus, resident viruus, stoned virus, time bomb, logic bomb, spoofing, trogen horce viruses, masquerading, deniel of service.

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14y ago

There are five kinds of warts

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15y ago

malicious threats or malicious programs.

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13y ago

2 types

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Q: What are all the computer viruses called?
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Related questions

Why are computer viruses appropriately called viruses?

From Virus on Wikipedia, the free encyclopedia:A virus is a small infectious agent that can replicate only inside the living cells of organisms.Computer viruses also spread all over your computer in a different manner. They get in your files, just like a real-life virus can get in all of your blood cells.So can you see the relation of why they're called viruses?


How many computer viruses can a computer have in a year?

All of them.


Which computer viruses are bad?

All of them.


Does marapets have viruses?

all computer games risk you of having a viruses, but marapets has a lot of viruses!


What types of computer viruses can destroy your computer?

All computer viruses that can run code on your computer have the potential to destroy everything or send your personal data to a hacker.


Do my hp games get viruses on your computer?

not at all


Do bacteria cause computer viruses?

No. Computer viruses are only called "viruses" by figurative analogy with biological viruses. And biological viruses (such as chickenpox, hepatitis, and the flu) are not the same as disease-causing bacteria (such as strep throat, tuberculosis, and lyme disease).


What are computers viruses?

Computer programs that do not have a positive outcome for your PC.


How do you prevent viruses from computer?

If you don't want viruses, download a good antivirus software such as Norton 360. Not all antviruses will remove all viruses, so occasionaly, a virus will pop up on your computer.


If your computer gets the Trojan virus does the computer loose all files saved onto it?

It all depends on which virus your computer gets. There are file deleting viruses and viruses which cause other problems.


Do mods give viruses to your computer?

no, it does not at all do not worry about it


How does a computer virus affect your desktop computer?

There are hunderds of ways it will make your desktop differ. For example: - Computer Viruses could disable all programs you have. - Computer Viruses could turn off your Anti-Virus. - Computer Viruses could block Internet from you.