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Chapter: Security in Computing : Administering Security

The Nature of Risk

In our everyday lives, we take risks. In crossing the road, eating oysters, or playing the lottery, we take the chance that our actions may result in some negative resultsuch as being injured, getting sick, or losing money.

The Nature of Risk

 

In our everyday lives, we take risks. In crossing the road, eating oysters, or playing the lottery, we take the chance that our actions may result in some negative resultsuch as being injured, getting sick, or losing money. Consciously or unconsciously, we weigh the benefits of taking the action with the possible losses that might result. Just because there is a risk to a certain act we do not necessarily avoid it; we may look both ways before crossing the street, but we do cross it. In building and using computing systems, we must take a more organized and careful approach to assessing our risks. Many of the systems we build and use can have a dramatic impact on life and health if they fail. For this reason, risk analysis is an essential part of security planning.

 

We cannot guarantee that our systems will be risk free; that is why our security plans must address actions needed should an unexpected risk become a problem. And some risks are simply part of doing business; for example, as we have seen, we must plan for disaster recovery, even though we take many steps to avoid disasters in the first place.

 

When we acknowledge that a significant problem cannot be prevented, we can use controls to reduce the seriousness of a threat. For example, you can back up files on your computer as a defense against the possible failure of a file storage device. But as our computing systems become more complex and more distributed, complete risk analysis becomes more difficult and time consumingand more essential.


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Security in Computing : Administering Security : The Nature of Risk |


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