10 Most Destructive Computer Viruses

Yocha News - A computer virus is very disturbing that we both work and students, but we encounter a computer virus is still in the mild category. Here are the most destructive computer virus ever in creating.

10. CIH - Loss $ 80,000,000


The virus is considered one of the most dangerous viruses and the most destructive ever since it has the ability to remain undetected in the computer's memory and infect every application running. First released in 1998, the CIH virus infects executable files from the operating system Windows 95, 98, to windows ME.

The virus is also deliberately distributed by software vendors, who contributed greatly to infect computers. What makes this virus is dangerous is that it has a trigger date. After that date is reached, it overwrite the file on your hard drive and destroy all the contents of the file.

CIH also has the ability to override the BIOS of the computer to prevent the boot up. The virus is also known as the Chernobyl virus because some variants are set to destroy data on computers that coincided with the nuclear power plant accident.

9. Blaster - Loss $ 320,000,000

Virus Blaster is a complex malware that spreads itself without going through email, but through good security vulnerabilities in the system of Windows 2000 and Windows XP. This malicious software was detected in mid-2003 and at that time to have infected hundreds of thousands of computers.

Once a computer is infected, the virus displays a message box indicating that the system will shut down within a few minutes. He is also programmed to launch DDoS attacks to servers run by Microsoft in April 2003. Inside the virus code is also found a hidden message to the founder of Microsoft Bill Gates that read "Billy Gates, why do you make this happen? Stop making money and fix your software! "

8. Sasser - Loss $ 500,000,000

Sasser is a fairly complicated computer virus capable of crippling thousands of computers. The virus is made by a 17-year-old student in Germany in 2004. Sasser is not spread by email, and do not require human intervention to infect a computer. This virus infects computers by exploiting vulnerabilities that are present on both machines Windows 2000 and Windows XP, known as the exploit (Remote Procedure Call) RPC - the same vulnerability used by Blaster virus.

Sasser successfully infect and kill thousands of computer networks in a matter of days. After infecting a computer, the virus is programmed to access the internet to look for other vulnerable machines so it can infect other computers.

7. SQL Slammer - Loss $ 750,000,000

SQL Slammer virus was ranked seventh of the most damaging in this list. Appeared in January 2003, spread rapidly through the internet. At that time the virus could make Bank of America ATM service crashes, the collapse of Seattle 911 service, and Continental Airlines canceled some flights due to error check in and ticketing.

6. Melissa Virus - Loss $ 1,200,000,000


Made in 1999 by David L Smith, basicnya Microsoft Word macros. It spreads via email with the document?? Here is that? Document you asked for, don?? T show it to anybodey else.?? The virus also has infected up to 20% of computer owners worldwide. When it comes opened, the virus will replicate and automatically sent to the top 50 in your email address book. Smith was jailed 20 months for his actions and was fined $ 5,000 and barred from accessing the computer without supervision.

5. Code Red - Loss $ 2,000,000,000


Unlike other viruses, this is a virus that is targeted to a computer running Microsoft IIS (Internet Information Server) Web Server, and exploiting a bug in the software. Once the computer has been infected, the virus will modify the site is accessed and display the message "Welcome to http://www.worm.com! Hacked by Chinese "Then!, I'll be looking for this virus to other computers running web server software and do the same thing. After about two weeks of infection, the virus is programmed to launch DDoS (Distributed Denial of Service) attack on certain websites, including the White House servers.

4. Conficker- Loss $ 9.1 billion


Conficker (also called Downup, Downandup and Kido) is a worm that emerged in October 2008. Conficker attacked Windows and most commonly found in Windows XP. Microsoft released a patch to stop worm was on October 15, 2008. Heinz Heise estimates that Conficker has infected 2.5 million PCs on January 15, 2009, while The Guardian estimated 3.5 million PCs terinfeksi.Pada January 16, 2009, this worm has infected almost 9 million PCs, making it one of the fastest virus infection spread in a short time .

3. ILOVEYOU - Loss $ 15 billion

The worm came from Manila, Philippines on May 4, 2000 and spread throughout the world in one day, moved to Hong Kong, then to Europe and the United States, causing economic losses of about $ 5.5 billion in less than two weeks. In 2000, 50 million people have been reported infected with this virus. In order to free itself from this virus, Pentagon, CIA, and the British Parliament should be shut down their email systems;. As do most large companies of the world.

This worm overwrite important files - music files, multimedia files, and more - with copies of itself. The virus also sends the worm to the first fifty people in the list of books friends. Because it is written in Visual Basic Script and Windows Address Book associated with Outlook, this worm only affects computers running Microsoft Windows operating system.

2. Sobig.F - Loss $ 37 billion

A computer virus is causing loss of billions of dollars by delaying or completely crashing Internet gateway and email server, so mercilessly slowing global internet access. This virus can send more than one million copies of itself in just a few hours. On September 2003, this virus has been programmed to disable itself. This virus and eventually stop threatening the world by itself.

1. MyDoom - Loss $ 38 billion

Began to attack on February 1, 2004, this virus makes a backdoor on the OS. The first time it started to date a DDoS. The second, dated 12 February, the virus stopped spreading and began to create backdoors. MyDoom spreads via email, but it always search on search engines such as Google began to receive millions of search queries and make slow until it crashes. Because of MyDoom, U.S. Senator Chuck Schumer proposed the creation Virus National Response Center.

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