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This scary looking guy is MyDoom, a virus that debuted in January 2004 and replicated faster than any previous worm. MyDoom opens a backdoor in a user's system, and spreads itself by mining e-mail addresses found on compromised computers. Dozens of variants still roam the net.
NetSky emerged just weeks after MyDoom and mocked its competitor in its source code. Though NetSky did little more than spread itself, it battled with MyDoom for control of the net's countless Outlook inboxes for months in 2004.
This odd virus, called Parite, debuted in 2001. It wraps itself around every executable file it can find on a compromised host, and thus runs along with every program executed on the machine. Here Parite is shown with its tentacles wrapped around NetSky.
Dragulescu didn't confine his efforts to malicious code — phishing e-mails get the graphic treatment too. But messages falsely stating that your bank account has been deactivated for your security don't look this alluring in your inbox.
SpySheriff pretends to be an anti-spyware program. But its fake warnings are simply an attempt to scare users into paying for a full version of a useless application. Still, you gotta love those stingers.
This $50 program called Ghost Keylogger records every keystroke from your keyboard and every URL you browse. It also takes covert screenshots. Though sold as a way to monitor what happens on your home computer, stalkers and identity thieves would love its functionality.
Trojan Gentil3, like much of the malware used by professional cybercrooks, is constantly tweaked to avoid antivirus software's signature files.
The Virut virus opens up a stealth connection to an internet chat channel, giving its creator the ability to install other malware on the infected computer. It debuted in 2006.