List of Most Dangerous Computer Viruses in the World – Perhaps you as Computer users are not familiar with the virus? Yeah, virus is one of malicious computer programs and for computer users. Many cases of which tells that they attacked computer virus. Viruses can attack a computer system, can even delete important data on the computer. Some viruses nothing to cause serious damage to computer systems. Security experts made busy to deal with this virus and make the software to eliminate them.

Viruses act like disease, which damages the computer system in various ways. So what are the most dangerous computer virus in the world?


List of Most Dangerous Computer Viruses in the World

1. Nimda

One of the dangerous virus in the world is Nimda. This virus first appeared in mid September 2001. The name of this virus is taken from the word Admin”, only in reverse.

Nimda spread through the Internet media such as email, web, file sharing, or exploit vulnerabilities that exist on the Web server Microsoft Internet Information Services.

This worm quickly managed to infect and paralyze thousands of computers around the world and reportedly is still spreading, but more slowly.


2. Storm Worm

Storm Worm is Trojan virus as deadly and destructive. Malicious software first appeared in 2006 and spread via email alias electronic messages in which is included a link.

At that time a lot of computer users who complain that they received spam emails with the message 230 dead as storm batters Europe. If the link is clicked, the virus will infect your computer and allow the computer controlled remotely to spread spam emails on the Internet.


3. Conficker

Conflicker in the category which very dangerous because the virus is spreading fast, discovered in October 2008. This virus is also known by the name Downup, Domnadup and Kido virus.

Conflicker spread through Microsoft Windows operating system, the most attacking Windows XP. The pages of The Guardian predict that Conficker has infected 3.5 million PCs in 2009, infection rates have increased to almost 9 million PCs within a day later.


4. Code Red

Code Red emerged on June 2001. This worm can damage various network servers by utilizing the existing loopholes in Microsoft Internet Information Server. This virus will make a full computer buffer memory so that it will drain.

This worm spreads only by using an Internet connection, and then to deface web pages which being opened. So it is not through the method of entrapment open the email attachment or click on a URL.

Code Red has managed to make more than 400,000 servers down instantly, and causing losses of US $ 2.6 billion.


5. Melissa

Melissa is one of the most dangerous computer virus ever. On March 26, 1999, the virus has be headline news across the world. This virus has managed to infect 20% of computers in the world in a short time.

The virus is contaminating the system by e-mail attachment entitled Here is that document you asked for, do not show it to anybody else”. If the attachment is clicked, then the virus will replicate itself and automatically sends itself to other email addresses 50 contained in the email address book of the victim.

Antivirus has been made to disable this virus but can’t remove the virus completely.


6. CIH

CIH into the category of a dangerous virus because the virus is difficult to detect. It will infect any applications on the computer. Losses incurred due to this virus reached more than US $ 100 million.

CIH was first detected in Taiwan in June 1998. The CIH has been named as one of the most dangerous computer virus ever created. The virus is also able to tamper with the computer’s BIOS that can not boot.



Sounds funny? But no doubt, ILOVEYOU virus malware is one of the most dangerous in the world and the most difficult to eradicate. it can replicate itself.

This virus was first discovered in the computer system of the Philippines on May 4, 2000. What is interesting is the method of dissemination. These viruses take advantage of the curiosity of the public by sending love letters via e-mail with the