The 5 Most Dangerous Viruses in Computer History that Destroyed

Computer users are usually exposed to a computer virus and even get rid of the virus by scanning the computer with antivirus software or cleaning the hard disk and reinstalling the operating system. But there were some viruses in history that not only thwarted anti-virus programs but also caused billions of dollars of damage to computers all over the world.

This article covers the introduction of the 5 top viruses to date and their makers, whose virus programs have caused serious harm to Microsoft, as well as other software makers.



Number 1 I Love You

The I LOVE U virus is by far the most harmful virus to the computer that infected more than 10% of the Internet's computers and, according to one estimate, lost more than $ 10 billion and is the world's largest Organizations are forced to shut down their mail systems, ie shut down. The virus was created by two programs in the Philippines - Reonel Ramones and Onel de Guzman.

The virus was transmitted via email and anyone who received the virus in the email and clicked on it would automatically send e-mail to all the e-mail records in its mailing list, leaving the rest Would also be affected.

This virus was originally a script of a computer program that took the form of a text file and the operating system of the window did not recognize it and as soon as the user clicked on it, it was distributed to the rest of the clicker's computer. 

Overrides key system files and stops booting.

Creating this malware virus could not be the case for both programmers in the Philippines since there was no law on malware makers in that era.

Number 2 Code Red

The virus first entered computers in 2001, created by two security staffers of the eEye Digital Company, and they named the code Red because they were drinking Red Bull when codifying the virus. Warm viruses attacked computers installed on the Windows Web server and exploit the buffer and flow problems in the systems.

This virus was very small on the hard disk and kept itself in the memory of the computer and after getting into memory it would multiply itself by several hundred and control all the computer resources and then if the computer internet When it is connected to the virus, it attacks various IP addresses, which list the White House website that was infected.

After hacked the web site, a message was displayed to the visitor who wrote: "Hacked By Chinese!"

Worldwide, 2 million server computers were infected with the virus and at that time there were 6 million total servers operating in the world.

Number 3 Melissa

The virus was created by David L. Smith in 1999 and named it a California dancer.

The virus contained a word file that contained the passwords of all the web sites and whoever opened the file, it infected the computer as well as forwarded itself to the e-mail addresses listed in the list. Was.

The virus programmer was arrested in just one week and was sentenced to 10 years in prison but 20 months in jail and fined $ 5,000, the virus spawned over $ 80 million worldwide. Did more damage.

No. 4 Sasser

This computer virus was first detected in 2004 by Sven Jaschan, a computer science student.

This virus slows down the computer after taking over all the computer's resources and exploit the buffer and flow problems.

The student was arrested shortly after being traced to the virus and later suspended from the job for 21 months.

Number 5 CIH

The virus was first discovered in 1998, designed by Chen Ing-Hau, a student at Tai Wan University.

This virus destroys its computer's BIOS and stops the computer from starting.

The virus, which spread through the Internet and through Pirated Software's, hit nearly 60 million computers in 1998 and is estimated to cost more than $ 1 billion.