10 Worst Viruses Witnessed in History

History has a record of the 10 worst computer viruses that did not just beat the best anti-virus software, but gave nightmares to many security experts as well.

· The Morris worm

This was created back in 1998 and was named after a university student, Robert Morris, the same student who created the worm. This worm infected 10 percent of all the computers that were linked to the internet and there were about 60,000 computers connected to the internet at that time. The worm brought all the systems to halt.

· The Concept virus

Within a few days, this virus became the most disseminated virus ever.

· CIH

· Anna Kournikova worm

It infected Windows computers with an email worm. · ILOVEYOU

· The Melissa virus

Melissa is recognized as a fast-spreading macro virus which was circulated through an e-mail attachment. This virus was created by David L. Smith and was a successful email-ware.

· The Blaster Worm

Blaster worm was created in 2003 as a denial of service attack against the Microsoft's website. The author of this particular worm was never discovered.

Netsky and Sasser worms were discovered by Sven Jaschan, a German teenager. · OSX/RSPlug Trojan

· Storm worm

The Storm worm was originally perplexed as a bad weather breaking news affecting Europe. Actually, this virus was in the news in 2007 and influenced millions of PCs. Hackers circulated spam and stole millions of identities.

Author is a computer professional and blog writer who basically writes on various computer security topics. He brings many interesting reviews about the latest anti-virus software and inform readers about the best free antivirus download for their computer protection.

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