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Zorluk: ZorRisk Identification, Assessment, and Response Strategies

An enterprise financial organization is conducting a quantitative risk analysis for its core transaction processing database. The asset has an estimated Asset Value (AVAV) of $2,000,000\$2,000,000. Historical threat intelligence indicates an Exposure Factor (EFEF) of 0.400.40 (40%40\%) from ransomware incidents, with an Annual Rate of Occurrence (AROARO) of 0.500.50 (once every two years).

To address this exposure, the Chief Information Security Officer (CISO) evaluates a dual-layer risk management proposal:
1. Deploying an automated air-gapped immutable backup architecture costing $50,000\$50,000 annually, which reduces the EFEF to 0.100.10 (10%10\%).
2. Purchasing a specialized cybersecurity liability insurance policy costing $30,000\$30,000 annually that provides coverage up to $500,000\$500,000 per incident.

Based on quantitative risk assessment principles and risk response definitions, which of the following statements correctly classify the risk response strategies and numerical metrics for this organization? (Select TWO.)

  1. Purchasing cyber liability insurance represents a risk transference strategy to shift financial loss, while deploying immutable backups represents a risk mitigation strategy to lower impact severity.Cevap
  2. Deploying the automated immutable backup solution reduces the baseline Single Loss Expectancy (SLESLE) from $800,000\$800,000 to $200,000\$200,000, yielding an Annual Loss Expectancy (ALEALE) reduction of $300,000\$300,000.Cevap
  3. C
    Purchasing the cyber liability insurance policy functions as a technical risk avoidance strategy that directly reduces the Annual Rate of Occurrence (AROARO) of ransomware attacks.
  4. D
    The deployment of the immutable backup solution yields a post-mitigation Annual Loss Expectancy (ALEALE) of $50,000\$50,000, calculated by multiplying the baseline SLESLE of $800,000\$800,000 by the new Exposure Factor of 0.100.10.

Cevap

The correct statements are that purchasing insurance acts as risk transference while backups act as risk mitigation, and that the backup solution reduces baseline SLESLE from $800,000\$800,000 to $200,000\$200,000, resulting in an ALEALE reduction of $300,000\$300,000.
Purchasing cyber liability insurance shifts financial loss responsibility to an insurer, which is the definition of risk transference. Technical controls like immutable backups decrease loss magnitude during a ransomware event, which represents risk mitigation. Mathematically, the baseline Single Loss Expectancy (SLESLE) is $2,000,000×0.40=$800,000\$2,000,000 \times 0.40 = \$800,000, yielding a baseline Annual Loss Expectancy (ALEALE) of $800,000×0.50=$400,000\$800,000 \times 0.50 = \$400,000. With the backup control reducing EFEF to 0.100.10, the new SLESLE becomes $2,000,000×0.10=$200,000\$2,000,000 \times 0.10 = \$200,000, and the new ALEALE becomes $200,000×0.50=$100,000\$200,000 \times 0.50 = \$100,000. Subtracting the new ALEALE from the baseline ALEALE gives an ALEALE reduction of $300,000\$300,000.

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1
Calculate the baseline Single Loss Expectancy (SLESLE) and Annual Loss Expectancy (ALEALE).
Baseline SLE=AV×EFbaseline=$2,000,000×0.40=$800,000SLE = AV \times EF_{baseline} = \$2,000,000 \times 0.40 = \$800,000. Baseline ALE=SLEbaseline×ARO=$800,000×0.50=$400,000ALE = SLE_{baseline} \times ARO = \$800,000 \times 0.50 = \$400,000.
Establishing baseline metrics is necessary to quantify potential financial impact before controls are implemented.
2
Calculate the post-mitigation SLESLE and ALEALE following the backup solution deployment.
New SLE=AV×EFnew=$2,000,000×0.10=$200,000SLE = AV \times EF_{new} = \$2,000,000 \times 0.10 = \$200,000. New ALE=SLEnew×ARO=$200,000×0.50=$100,000ALE = SLE_{new} \times ARO = \$200,000 \times 0.50 = \$100,000.
The backup solution lowers the Exposure Factor (EFEF) from 40%40\% to 10%10\% while the AROARO remains 0.500.50.
3
Determine the total ALEALE reduction achieved by the mitigation strategy.
ALEALE Reduction = Baseline ALEALE - Post-mitigation ALEALE = $400,000−$100,000=$300,000\$400,000 - \$100,000 = \$300,000.
Quantifying ALEALE reduction provides the annual monetary risk benefit of the technical control.
4
Categorize the risk response strategies conceptually.
Insurance transfers financial risk to a third party (Risk Transference). Backups reduce potential damage severity (Risk Mitigation).
Risk response types are defined by how they modify risk ownership, likelihood, or impact.

Anahtar Kavram

Quantitative Risk Assessment and Risk Response Classification
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Konular

Risk Identification, Assessment, and Response Strategies

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