The Chinese have been suspected for the past ten years of being behind many of the worm virus attacks, notably the Conficker worm one of the worst.
The Iranians are still looking for who attacked their nuclear facilities with a worm virus named Stuxnet, which targets only Siemens controllers that run their nuclear centrifuges.
Practically every outbreak of a worm or malicious virus has been preceded by warnings from the security community.
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So far, nobody's ever seen a malicious virus or worm of that sort.
Described as a virus, Melissa was said by some to be both a virus and a worm.
Customers cannot use UCITA to sue software vendors for damages, even in cases like the recent attacks by hackers using the Melissa virus and the Worm.
Worse, the worm can "lobotomize" anti-virus software, Corman says, so that it appears to be running but has no effect.
The virus is more properly known as a worm because it needs the help of others to spread itself.
It could be a virus on a USB stick, as the Stuxnet worm showed, though it went in the other direction.
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Subsequent investigation of the virus showed that it was written using a virus toolkit by the name of the Visual Basic Worm Generator that is widely available on the internet.
The worm that infected computers at the Marine Corps headquarters at the Pentagon early Friday was ExploreZip, an especially malicious virus that typically travels by e-mail, according to a Marine Corps spokesman.
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