Saturday, 27 February 2010

How are viruses spread - A Common Theory


A computer virus is a set of program instructions that attaches itself, and spreads to other files. Viruses corrupt files, destroy data, displays fake warning messages and generally exploits the integrity of a system, disrupting normal computer activities.

There is a common theory that viruses contain program codes to spread themselves from one computer system to another. They do not. The reason viruses spread is due to the redistribution of infected files by exchanging flash drives and compact discs, sending e-mail attachments and downloading software from the Web. Peer-to-peer networks such as BitTorrent are a key contributor to the distribution of viruses



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