A virus is technically defined as a software program, which may cause harm or damage to a person's computer system. It does this by replicating itself in the computers that it comes across. It normally takes hold of a large amount of the computer's memory, which may cause the computer to crash. The virus can be found on a computer's local disk drive. Viruses usually spread from one computer to another via the transfer of infected files.
There are different types of viruses. The boot sector virus which, as the name implies, resides in the boot sector of a bootable disk or the hard drive. The boot sector virus affects the computer's hard disk itself and not the files in the hard disk. It is an uncommon virus nowadays since this virus normally affects floppy disks and in this day and age, people rarely use this kind of storage medium. Another type of virus is the network virus which infects a Local Area Network or LAN. This may be found in an office's computer network if the network is unprotected against these kinds of threats. There is also the macro virus which is known to affect common application programs like Word and Excel. Transferring or copying infected documents from one computer to another also leads to the spreading of the virus.
Viruses are made and written by some people because of different reasons. Some of these viruses were created for the sole purpose of tricking someone or for playing a practical joke. Others create viruses with more shady purposes in mind such as stealing their passwords and the like. Whatever the reason that these people have in creating viruses, they are usually up to no good.
To prevent the appearance of a virus on a person's computer system, having a good and reliable antivirus software program is important. These antivirus programs are the best device for protecting a person's system from any kind of virus.
There are two types of antivirus programs which can be availed of. The first type is the paid antivirus download. This means purchasing the product over the internet and downloading it into your computer. This type of antivirus is free in its trial version. However, consumers need not be afraid since there are also some free antivirus software programs available for downloading over the internet. The manufacturers keep the antivirus free so that everyone can be protected from the threat the virus threat.
A person is recommended to have at least one antivirus program running in his/her computer. To further enhance their protection, the person is also recommended to update his/her antivirus software on a regular basis. This applies to free antivirus software and paid antivirus software alike. There are always new viruses coming out over the internet every day. These antivirus software updates make sure that you have protection from these new viruses. It doesn't hurt to be protected and prepared for anything that might happen.
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