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active viruses




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For W95/98/Me/
2000PRO/NT4/XP


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Glossary:


What is a computer virus?


What's a Trojan?


What's an I-worm?


What's a Hoax?


What's a Logic bomb?


What's a Zoo virus?


What's D.O.S?


What's a Boot Virus?


What's a Companion Virus?


What's a Cavity Infector?


What's a Macro Virus?







What is a computer virus?
Computer virus is an application that replicates copies of itself and further spreads itself to other machines. Viruses do not have to be created by the experts, in fact most viruses can be (and were) written by average programmers.





Zoo Viruses
These are viruses that luckily did not succeed in spreading. They are kept guarded in the database of AntiVirus developers (analogy: Animals are guarded in the zoo - that's where the name "Zoo Virus" originated). There is however another category of zoo viruses - outdated viruses. For example the viruses written for old operating systems, that nobody uses anymore, or old diskettes etc.






Trojans
The name Trojan originated from the actual Trojan horse. Greeks used a wooden horse to break the siege of Troy. Trojan viruses do the same - gain access to computer and cause damage. There are some Trojans, which allow their creators to access user's computer without user's awareness. They can read, change, copy and delete your personal information.






I-Worm
Worm is a virus spreading thru network connections. However in the mid 90's the new classification for worm arose "I-worms". I-worms are referred to worms spreading through email.






Key Logger
Just as the name suggests if a program logs your every keystroke, it is considered a key logger. They are designed to steal your passwords and other sensitive information. There are two types of key loggers. One sends the logs to the author via email. Another one is stored in your hard drive. The author however would need the access to your computer in order to view the log. The second program can be installed on public computers, so beware and do not perform any sensitive procedures in public.






Hoax
Hoaxes are simple gossips, designed to cause panic. The only thing they do is slow down servers, due to users informing their friends about a so-called "virus" by email, and waste people's time.





D.O.S.
D.O.S. stands for denial of service. These programs are designed to reduce the speed, cause outage of a service, artificially inflate bandwidth etc.





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Latest News:

November 8th, 2002
There is a growing epidemic of I-Worm.Tanatos, aka Bugbear.

It spreads via Internet as an attached file. It contains Trojan algorithms to control the infected computer. The worm has a size of 50k and is written in Microsoft Visual C++. It has a random subject line and randomly sends either text emails or html-based emails. Tanatos takes advantage of the breach in iframe and infects computer without any action on the part of user, whenever the email is opened.                    More...


November 1st, 2002
Microsoft Corporation is warning the users of their products about a new worm that pretends to be a greeting card.

People who read this greeting are invited to install new software. In the installation agreement it states that the software will have access to the user's address book. On Tuesday, MessageLabs discovered that these "greeting cards" are being sent from Cool-Downloads.com, which according to whois database is registered in Panama City, El Dorado.                       More...



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