Determine Vulnerabilities

The next step in risk analysis is to determine the vulnerabilities of these assets. This step requires imagination; we want to predict what damage might occur to the assets and from what sources. We can enhance our imaginative skills by developing a clear idea of the nature of vulnerabilities. This nature derives from the need to ensure the three basic goals of computer security: confidentiality, integrity, and availability. Thus, a vulnerability is any situation that could cause loss of confidentiality, integrity, and availability. We want to use an organized approach to considering situations that could cause these losses for a particular object.


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Determine Vulnerabilities
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Software engineering offers us several techniques for investigating possible problems. Hazard analysis, described in Sidebar 10-5, explores failures that may occur and faults that may cause them. These techniques have been used successfully in analyzing safety-critical systems. However, additional techniques are tailored specifically to security concerns; we address those techniques in this and following sections.