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Zorluk: ZorRisk Identification, Assessment, and Response Strategies

A financial organization is conducting a quantitative risk assessment for a mission-critical cloud payment API valued at $1,200,000\$1,200,000. Security analysts estimate that without additional controls, a major security breach would have an Exposure Factor (EFEF) of 40%40\% and an Annual Rate of Occurrence (AROARO) of 0.500.50. The organization evaluates a security safeguard with an annual operating cost of $45,000\$45,000. Implementing the safeguard is projected to reduce the EFEF to 10%10\% and the AROARO to 0.250.25. Based on this quantitative risk analysis, what is the net annual financial benefit of implementing the safeguard?

  1. A
    Net annual benefit of $210,000\$210,000
  2. B
    Net annual benefit of $195,000\$195,000
  3. Net annual benefit of $165,000\$165,000Cevap
  4. D
    Net annual benefit of $75,000\$75,000

Cevap

The net annual financial benefit of implementing the safeguard is $165,000\$165,000.
The correct option determines the net annual benefit by evaluating the difference between baseline annual risk and residual annual risk after control implementation, then subtracting the safeguard's annual maintenance cost. Pre-mitigation ALE is $240,000\$240,000 ($1,200,000×0.40×0.50\$1,200,000 \times 0.40 \times 0.50) and post-mitigation ALE is $30,000\$30,000 ($1,200,000×0.10×0.25\$1,200,000 \times 0.10 \times 0.25). The gross annual savings from risk reduction is $210,000\$210,000 ($240,000−$30,000\$240,000 - \$30,000). Subtracting the safeguard's $45,000\$45,000 annual operational cost yields a net annual financial benefit of $165,000\$165,000.

Adım Adım Çözüm

1
Calculate the pre-initiative Single Loss Expectancy (SLE) and Annual Loss Expectancy (ALE)
SLEinitial=$1,200,000×0.40=$480,000SLE_{initial} = \$1,200,000 \times 0.40 = \$480,000; ALEinitial=$480,000×0.50=$240,000ALE_{initial} = \$480,000 \times 0.50 = \$240,000
Determines the current expected baseline annual loss prior to implementing additional controls.
2
Calculate the post-initiative SLE and ALE with the safeguard in place
SLEpost=$1,200,000×0.10=$120,000SLE_{post} = \$1,200,000 \times 0.10 = \$120,000; ALEpost=$120,000×0.25=$30,000ALE_{post} = \$120,000 \times 0.25 = \$30,000
Determines the residual annual loss expected after applying the proposed safeguard.
3
Calculate the gross ALE reduction (value of risk mitigation)
ALE Reduction=$240,000−$30,000=$210,000\text{ALE Reduction} = \$240,000 - \$30,000 = \$210,000
Measures the annual loss prevented by reducing exposure and frequency of occurrence.
4
Subtract the annual cost of the safeguard to determine net benefit
Net Benefit=$210,000−$45,000=$165,000\text{Net Benefit} = \$210,000 - \$45,000 = \$165,000
A safeguard is cost-effective if the net annual benefit (annual loss saved minus annual cost) is positive.

Anahtar Kavram

Quantitative Risk Analysis & Safeguard Cost-Benefit Calculation
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Risk Identification, Assessment, and Response Strategies

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