Here is a small keyterms guide to aid you in the various
terminology dealing viruses and other harmful programs on the
Internet.  A virus is a malicious program that reproduces itself
and is capable of causing harm to files or other programs on a
computer. Most viruses require human assistance to spread from
computer to computer. A virus is loaded onto your computer by a
hacker without your knowledge and runs against your wishes
turning your computer into a zombie.  A worm is a malicious
program that replicates itself until it fills all of the storage
space on a drive or network. A worm is considered to be a sub-
class of viruses and unlike a virus, a worm does not require the
assistance of humans to travel from computer to computer. One
example of a worm would be for a it to send out a copy of itself
to everyone in your e-mail address book and then replicate
itself again to send itself out to everyone listed in each of
the receiver's address book and so on and so on creating a chain
effect.  A Trojan Horse is