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Worst Computer Viruses

There have been many destructive viruses to hit mass scale over 25 years.  With the evolution of the Internet and modern software, we have witnesses a whole host of deadly computer viruses, especially from the millennium onwards.

Morris Worm

Most Destructive Computer Virus of All Time: Morris Worm, one of the first computer worms to hit on a mass scale 25 years ago.
Early On: Morris Worm, one of the first computer worms to hit on a mass scale 25 years ago.

Malware

33% of the world's computers have been affected by malicious software: viruses, trojans, trojan downloaders and droppers, unwanted software, adware, exploits, worms, phishing and monitoring tools, backdoors, spyware
33% of the world’s computers have been affected by malicious software: viruses, trojans, trojan downloaders and droppers, unwanted software, adware, exploits, worms, phishing and monitoring tools, backdoors, spyware
Countries most affected: China, South Korea, Taiwan, Turkey

Cyber Threat History: Notable Destructive Viruses

I Love You Virus

History of Cyber Threats: I Love You Virus 2000
Cyber Threat History: I Love You Virus; Philiipines, 500k infected, $15 Billion in Damages; email virus

Code Red Virus

History of Cyber Threats: Code Red Virus 2001
Cyber Threat History: Code Red Virus 2001; China, 1m infected, $2.75 Billion in Damages; network/email worm

Slammer Sapphire Virus

History of Cyber Threats: Slammer Sapphire Virus 2003
Cyber Threat History: Slammer Sapphire Virus 2003; Unknown Origin, 350k infected, $ 1 Billion in Damages; web server virus

My Doom Virus

History of Cyber Threats: My Doom Virus 2004
Cyber Threat History: My Doom Virus 2004; Unknown Origin, 1m infected, $38 Billion in Damages; email worm

Storm Worm Trojan Virus

History of Cyber Threats: Storm Worm Trojan Virus 2007
Cyber Threat History: Storm Worm Trojan Virus 2007; Russia, 10m infected, $ Unknown in Damages; backdoor Trojan

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