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Training Camp • Cybersecurity Glossary
Single Loss Expectancy (SLE) is the monetary loss from one threat event, calculated as asset value times exposure factor; it feeds into ALE.
Single Loss Expectancy (SLE) Definition: Single Loss Expectancy (SLE) is the monetary loss from one threat event, calculated as asset value times exposure factor; it feeds into ALE.
Single Loss Expectancy (SLE) is a quantitative risk metric representing the expected monetary loss from a single occurrence of a specific threat against an asset. It is calculated by multiplying the asset value by the exposure factor, the percentage of asset value lost in the event, expressed as SLE = Asset Value x Exposure Factor. SLE is a building block of the Annualized Loss Expectancy used to prioritize risk treatment decisions.
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