It should become clear to you after these activities that malicious code is more than just the on-line equivalent of a practical joke. Malicious code can be written, and to some people, if it can be done they feel compelled to do it. To others, it is an accident, a program that was meant to be beneficial but turns out to be something else. No matter what the motivation, malicious code costs American businesses -- and home computer users as well -- billions of dollars. Will we ever be rid of malicious code? That is unlikely. Will be ever be safe from it? Only the future can tell, but it will probably get worse before it gets better.

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