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In formal literature computer security is described as a field of computer science concerned with devising ways to prevent weaknesses from being exploited.

Computer security addresses three aspects:

Computer security is concerned with threats which are sets of circumstances that have the potential to cause loss or harm. We can view any threat as being one of four kinds:

Threats are blocked by control of vulnerabilities. Sometimes these controls can prevent or mitigate attacks; other, less powerful methods can only inform us that security has been compromised, by detecting a breach as it happens or after it occurs. The following controls are available:

Effectiveness of controls. Merely having controls does no good unless they are used properly. Let us consider several aspects that can enhance the effectiveness of controls.

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This page has been accessed 1,718 times. This page was last modified on 21 June 2007, at 21:45.


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