Lately it seems I can't open my inbox with out seeing a new article on defence in depth. This is fine: defence in depth is crucial to anti-virus protection. Unfortunately, most of the articles are missing two crucial components. To understand what is being missed, we need to look at what is meant by defence in depth as it applies in the malicious software world. For the purpose of this paper, when referring to defence in depth, we will be specifically talking about the utilization of anti-virus software, and other methods to provide a multi-layered anti-malware defence in a corporate environment.

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