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Michael S. Mimoso, Editorial DirectorA risk assessment involves trying to understand where potential exposure points are. I recommend looking at the problem from the perspective of a business system, which I describe in my book, The Pragmatic CSO, as a set of networking resources, servers and applications that automate a business process. There are many tools to poke at a business system to see potential areas of exposure, including vulnerability scanners and penetration tests for all system components.
A business impact analysis involves understanding what's going to happen to the business if one of these systems goes down. It can apply to any kind of event or incident. This tends to be more of a qualitative analysis, working with cross-functional teams -- including finance and operations -- to understand what isn't going to happen if a system goes down.
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This was first published in June 2007