Homotopy extension property: Difference between revisions
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en>Lesnail changing some of the letters because I like it better this way |
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'''Single loss expectancy''' (SLE) is the monetary value expected from the occurrence of a risk on an asset. It is related to [[risk management]] and [[risk assessment]]. | |||
Single loss expectancy is mathematically expressed as: | |||
:<math> {Single\ Loss\ Expectancy\ (SLE)} = {Asset\ Value\ (AV)\ } \times {\ Exposure\ Factor\ (EF)}</math> | |||
Where the [[exposure factor]] is represented in the impact of the risk over the asset, or percentage of asset lost. As an example, if the [[asset value]] is reduced two thirds, the exposure factor value is .66. If the asset is completely lost, the Exposure Factor is 1.0. | |||
The result is a monetary value in the same unit as the Single Loss Expectancy is expressed (euros, dollars, yens, etc.): | |||
Exposure factor is the subjective, potential percentage of loss to a specific asset if a specific threat is realized. The exposure factor (EF) is a subjective value that the person assessing risk must define. | |||
==See also== | |||
*[[Information assurance]] | |||
*[[Risk assessment]] | |||
*[[Annualized loss expectancy]] | |||
==External links== | |||
* [http://www.digitalthreat.net/2010/05/information-security-risk-analysis/ Information Security Risk Analysis Paper from Digital Threat] | |||
[[Category:Data security]] | |||
[[Category:Financial risk]] | |||
{{economics-stub}} | |||
Revision as of 21:02, 17 July 2013
Single loss expectancy (SLE) is the monetary value expected from the occurrence of a risk on an asset. It is related to risk management and risk assessment.
Single loss expectancy is mathematically expressed as:
Where the exposure factor is represented in the impact of the risk over the asset, or percentage of asset lost. As an example, if the asset value is reduced two thirds, the exposure factor value is .66. If the asset is completely lost, the Exposure Factor is 1.0.
The result is a monetary value in the same unit as the Single Loss Expectancy is expressed (euros, dollars, yens, etc.): Exposure factor is the subjective, potential percentage of loss to a specific asset if a specific threat is realized. The exposure factor (EF) is a subjective value that the person assessing risk must define.