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Risk value calculation

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Guest user Created:   Dec 22, 2016 Last commented:   Dec 22, 2016

Risk value calculation

Just need enlightenment on a trivial thing, normally I have seen that risk impact is multiple of likelihood and consequence/ severity i.e. Risk impact= likelihood of occurrence x consequence faced. However in your document Risk impact is taken as sum of both consequence and likelihood. Any technical reason why is this so?
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ISO 27001 RISK ASSESSMENT AND RISK TREATMENT METHODOLOGY

Define main rules for risk assessment and treatment.

ISO 27001 RISK ASSESSMENT AND RISK TREATMENT METHODOLOGY

Define main rules for risk assessment and treatment.

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Rhand Leal Dec 22, 2016

Answer: For the purpose of a single risk value calculation, there is no particular technical reason for using sum instead of multiplication, and vice versa, to calculate risk value. The decision for sum or multiplication will only matter in more complex risk calculation activities, involving probabilistic theories, which is not the case.

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Dec 22, 2016

Dec 22, 2016