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A computer system that is not connected to a network, or the internet (or both) is a rare thing indeed in this day and age. While this provides a considerable amount of power and flexibility to the user in terms of access to remote services, data and information it carries with it great risks. It is not too much of an exaggeration to state that any computer connected to a network is in danger of being attacked in some way. For proof of this fact look no further than the secure computer environments used by government defense organizations. To these people, a secure computer is located in a physically secure area where users pass through stringent security checks and are searched to ensure they are not carrying any portable storage devices or media which would allow software to be installed in a secure system. The computers themselves, whilst possibly networked to each other, have absolutely no contact to the outside world.

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