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Zorluk: ZorRisk Identification, Assessment, and Response Strategies

An organization is evaluating the annual financial exposure of a cloud storage infrastructure valued at $800,000. A recent risk assessment reveals that ransomware attacks pose a threat to this system with an estimated Exposure Factor (EF) of 0.25 (25%). Threat intelligence indicates that the Annualized Rate of Occurrence (ARO) for this type of attack vector is 0.50 (once every two years). Based on quantitative risk analysis methodology, what is the calculated Annualized Loss Expectancy (ALE) in US dollars?

Cevap: 100000 USD

Cevap

The Annualized Loss Expectancy (ALE) for the cloud storage infrastructure is $100,000.
The correct calculation follows quantitative risk management standards where Single Loss Expectancy (SLE) = Asset Value (800,000)×ExposureFactor(0.25)=800,000) × Exposure Factor (0.25) = 200,000. Then, Annualized Loss Expectancy (ALE) = SLE (200,000)×AnnualizedRateofOccurrence(0.50)=200,000) × Annualized Rate of Occurrence (0.50) = 100,000.

Adım Adım Çözüm

1
Determine Single Loss Expectancy (SLE)
$200,000
SLE represents the financial impact of a single risk event, calculated by multiplying the total asset value ($800,000) by the exposure factor (0.25).
2
Calculate Annualized Loss Expectancy (ALE)
$100,000
ALE measures expected annual financial loss by multiplying the single loss impact ($200,000) by the annual frequency of occurrence (0.50).

Anahtar Kavram

Quantitative Risk Analysis (ALE calculation)
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Konular

Risk Identification, Assessment, and Response Strategies

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