Sunday 9 October 2011

Different types of computer infections and a history of some of the worst culprits.

We have all heard about computer viruses. They are aptly named. Like biological viruses they have the capability of spreading without difficulty and it can be very nearly impossible to stem that spread. A virus attacks the files on your computer and multiplies.

However, there are several variations on the generic term – which in basic terms means a bug that has been devised to compromise your computer system – simply out of a sense of devilment or, as is becoming more and more frequent, for more nefarious reasons.

This can mean the difference between someone taking some rather peculiar remote pleasure out of slowing down or corrupting your computer or even completely disabling its operation, to someone being able, through the introduction of a virus, to log your very actions on your own computer – sometimes from a completely different country or even continent! By doing so they can obtain details of your identity and your personal financial information and wreak havoc on your personal and financial life.

But there are other threats that can be just as dangerous, if not more so, than viruses. So, what are these different kinds of malevolent interferences with e safe operation of your internet life?

The worm, which is, like the virus, aptly named, can decimate the operation of your entire system, frequently gaining entry because of your subscription to social networking sites without taking the necessary precautions.
The Trojan Horse, so named because you often take it into your system because it presents itself as a welcome gift rather than a menace, can completely eradicate your system, it can allow the theft of your information and it can allow key-logging of your computer. Often, Trojan Horses pose as programmes that you should download to protect you from a virus risk, so cunning are their producers.

Some of the Worst Viruses

1. Melissa was a worm that attacked computers in 1999. The first fifty names of a users email contact list were sent an infected document. This worm proliferated uncontrollably, causing untold damage to business.

2. The Chernobyl virus dates back to 1998. It attacked the computer’s memory and eventually deleted all files on the computer’s hard disk.

3. Slammer caused havoc in 2003, infecting over half a million computer servers, which, in turn, affected the operation of a multitude of computers.

4. Sobig.F was a virus that spread through the Outlook Express contacts list of users and proliferated to such an extent that it caused damage to the operation of millions of computers throughout the world. 5. MyDoom, like Sobig, proliferated through emails. By sending a fake message, often in the form of an alert, Mydoom infected a computer and the same message was sent to all contacts, resulting in an enormous worldwide problem.


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