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What is a Virus?

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What is a Virus?

Postby venney » Thu Jan 06, 2005 11:25 am

What is a Virus?
A virus is a manmade program or piece of code that causes an unexpected, usually negative, event. Viruses are often disguised games or images with clever marketing titles such as "Me, nude.”

What is a Worm?
Computer Worms are viruses that reside in the active memory of a computer and duplicate themselves. They may send copies of themselves to other computers, such as through email or Internet Relay Chat (IRC).

What is a Trojan Horse?
A Trojan horse program is a malicious program that pretends to be a benign application; a Trojan horse program purposefully does something the user does not expect. Trojans are not viruses since they do not replicate, but Trojan horse programs can be just as destructive.
Many people use the term to refer only to non-replicating malicious programs, thus making a distinction between Trojans and viruses.

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Postby Daninku » Thu Jan 06, 2005 11:39 am

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What is Spyware?
Any software that covertly gathers user information through your Internet connection without your knowledge, usually for advertising purposes. Spyware applications are typically bundled as a hidden component of freeware or shareware programs that can be downloaded from the Internet; however, it should be noted that the majority of shareware and freeware applications do not come with spyware. Once installed, the spyware monitors user activity on the Internet and transmits the information in the background to someone else. Spyware can also gather information about e-mail addresses and even passwords and credit card numbers.

What is Adware?
Adware is advertising supported software. It is software that can be downloaded free from the web, but contains banner advertisements that create revenue for the company. Adware will usually, like Spyware, install components on your computer that will send marketing information whenever you are online. Unlike Spyware, Adware contains a disclosure telling you that they will be using your information. It is important to read the privacy policy when downloading Adware.

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Postby master01 » Sat Aug 04, 2007 8:12 am

The top computer threats are viruses and worms. Both these types of viral malware replicate themselves and can rapidly spread unless there is good anti-virus protection. For this reason, traditional anti-virus tools are fundamental to enterprise threat defense. Good anti-virus applications must be able to protect computers against all types of viral threats and also be able to rapidly respond to new and emerging viral malware.
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