By Pinaki Ghosh 

The viruses are mainly activated to destroy the computer by actually damaging the programs or by deleting the files, or the reformatting of the main hard disk. People mainly create much type of viruses to work against the other agents and in turn severely damage your files! There are viruses programmed in a way to actually reformat the hard disk, which in turn means losing out on much of the information that one stores on his PC. At the same time, there are viruses which do not get any severe damage done to the computer, but are present in the files. Thus, they appear randomly and can also be present in the outgoing mails.
The viruses in the computers are programs which are developed in a way that they spread from one computer to another and sometimes completely crash your system!
Not only does a virus corrupt your saved data, but at times it deletes the entire data on the system. It deletes everything that is stored on your hard disk. Mostly the attachments in the emails and the on the instant messages actually spread the viruses. Hence, this is why one is advised not to download the attachments which are sent through unknown email ids. These viruses can be even the images or the cards. Also, sometimes they are the audio or the video clips.

Downloads can also pose as a medium for the viruses to spread. Most of the time, you do not know the virus that you may be downloading and through which software! It’s extremely essential that you get yourself a tool like the antivirus tools and upgrade your computer before it does any harm to your PC. You must take proper care while downloading any sort of software directly, even before scanning the attachment. Once your PC is affected, it’s difficult to retrieve all the information that has been stored.
The viruses are further on divided into two types of viruses mainly the Resident Virus and the Non Resident Virus. 

To get a brief overview on the Resident Virus and the Non Resident Virus you can go through the following:

The Resident Viruses:

The Resident viruses have a certain imitation unit which is just like to the one that works along the nonresident viruses. The effect is seen when it is executed.

The resident viruses are further broken down into the fats infectors and the slow infectors. The fast infectors are designed in a way that they affect a lot of the files in one go. They can log on to the host file whenever they would want. But in this case, it poses a threat to the anti virus that has been installed. And if in case the virus scanner does not hold the ability to get hold on the virus, this virus can keep its hold over the PC and infect all the files which are stored on the disk. The infectors certainly depend on the infection rate which should be spread. But in this case, it slows down the PC and can also be noticed by the anti virus that is installed in the PC.

The slow infectors on the other hand are especially designed to act as a slow poison for the host files. Most of the slow infectors infect files only when they are xeroxed. Normally they do not slow down the computer, and the anti virus is on an alert whenever there is any not so favorable act that goes on.

The Non Resident Viruses:
The Non- Resident Viruses are categorized as the Finder Module and a Replication Module. The Finder Module is mostly held up in finding the new files which can be infected. For most of the new executable folders and files which is called as the replication module which is used to infect that file.
Most of the Replicators main work focuses on:
1. You need to check the executable file which has been already infected with a virus.
2. The executable file must be appended with the Virus Code.
3. The starting point must be saved.
4. You must also save the changes to the executable file.
5. Close the file that has been infected.
There are many more areas that the Replicator would want to focus on.

This entry was posted on Thursday, January 29th, 2009 at 4:50 am and is filed under Business Tips, Internet Marketing, Small Business, Uncategorized, Woman Entrepreneur, customer service. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.