This content is 20 years old. I don't routinely update old blog posts as they are only intended to represent a view at a particular point in time. Please be warned that the information here may be out of date.
Microsoft have published an interesting article to introduce the key concepts and differences between viruses, worms and Trojan horses. Some may find this a little simplistic, but it still contains some simple, practical advice that we should all be following.
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