Types of Computer Viruses and the Most Dangerous Viruses

Types of Computer Viruses and the Most Dangerous Viruses

Types of Computer Viruses and the Most Dangerous Viruses

Netgenz - Technology  Computer and Internet The problem that often occurs on a computer or laptop is being attacked by a virus. As a result of the virus, it can slow down laptop performance, unread or lose important files, and even hack accounts. However, with the development of the times, the technology to block viruses is also getting more sophisticated. That's why it's rare now to have a shocking virus attack.

You must know the kinds of viruses!

Types of Computer Viruses

1. Virus Worm

Viruses that infect computers use email and are connected to the internet. This virus can reproduce itself, creating useless random files on the computer so that the storage memory fills up quickly and the computer system becomes fragile.

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2. Trojan Virus

This virus appears through the internet and received email. Trojans have the ability to obtain information such as passwords, user habits recorded in the system log, data, and even control the target.

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3. Multipartite Virus

This virus infects certain operating systems and programs which, if left untreated, will compromise the health of RAM and hard disks.

4. Web Scripting Virus

Web scripting appears when a computer is connected to the internet and interferes with programs on the computer. Actually, Web Scripting is a program code that is used to operate the content on the website and is not a virus. However, because it interferes with it, it is classified as a virus.

5. FAT Virus

Viruses are hidden in private data storage and are capable of damaging certain files. This virus can hide files so that it appears that files are lost or deleted.

6. Memory Resident Virus

This virus infects RAM and computer programs, making laptop performance slow down. This virus is active when the computer is turned on and causes the program to run abnormally.

7. Companion Virus

This virus interferes with your personal data and hides in the hard disk. It is very difficult to detect because this virus corrupts the fake data format.

8. Backdoor Virus

This virus is similar to a trojan, but its shape is similar to ordinary files such as games. The name backdoor refers to the mechanism by which a virus can access a system, network, or application.

9. Directory Virus

This virus makes the computer slow down and can not open the program. This virus also infects files with the .exe extension so that files can be lost or error for no reason. When this .exe file works, the virus will be active and infect other files.

10. Macro Virus

The type of virus with the programming language of an operating system application. This virus usually comes from email and attacks .pps, .xls, or other files. For that, avoid clicking random messages that are not clear.

Around the 2000s, a lot of virus attacks are very detrimental. Some of them are called the most dangerous viruses. Want to know the story?

The Most Dangerous Computer Viruses of the 2000s

1. Melissa

Melissa virus was popular in the United States in 1999. The spread of this virus through Word files. If the file is opened, it will be forwarded to 50 other people's email contacts. Losses from the Melissa effect were estimated at US$1.2 billion. The creator of the virus was immediately caught and imprisoned.


This virus spread to 45 million people in 2000 and ravaged computers. ILOVEYOU can delete photos, audio, and other files. Losses are estimated at US$15 billion. The subject of ILOVEYOU is very curious, right? That's how creators entice email recipients to click.

Also Read: Types of Computers in the World that You Must Know!

3. Anna Kournikova

This worm virus spreads from email to email. When the email is clicked, the virus immediately spreads to all contacts in the email account. The creator of the virus used a photo of athlete Anna Kournikova to lure email recipients to click. In 2001, this virus took over the whole world and infected computers in the world. Losses caused by the virus reached the US $ 166 thousand. The creator of the virus turned himself in and was punished.

4. SQL Slammer / Sapphire

The virus spread in the United States around 2003 and caused a lot of damage such as disrupting airline schedules because online ticketing was broken, stopping ATM servers, making 911 telephones jammed, and blocking 27 million people from the internet.

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5. Sobig

The virus that spread in 2003 was dubbed the fastest growing virus. Losses were estimated at US$ 37.1 billion and stopped a number of US airlines and major companies there.

To prevent virus attacks, install your laptop or computer with an antivirus. Scan computers and laptops regularly. And the tips you must remember are not to open or press links carelessly if the source is not clear.

If your computer or laptop is infected with a virus, clean your device immediately. If you need help with office laptop service services to clean viruses, you can contact Asani.

Also Read: Here are 10 Tips to Make Your Computer So Cool

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