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Showing posts from December 8, 2013

3.1.2 Virus

Virus Based on a Google definition, a biological virus is “an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.” A biological virus introduced into a living cell can reproduce, corrupt and/or destroy cells in the host. A computer virus as the name suggests “infects” computers. It is software code written to perform surreptitious and often malicious activity on the system. It is embedded (hidden) in a “host” program. When the host program is introduced into a computer system and run, the virus is activated and can cause harm by interfering with the normal operation of the system. Merriam-Webster defines a computer virus nicely as – “a computer program that is usually hidden within another seemingly innocuous program and that produces copies of itself and inserts them into other programs and usually performs a malicious action