1. Context Establishment (ISO 31000 Clause 6.3)
Assessment Scope: Evaluation of risks associated with using Microsoft SharePoint Online as a managed file storage solution for staging Personally Identifiable Information (PII) data from the PSP (Partner Support Portal) at Canonical.
Risk Criteria: Risk will be evaluated based on potential impact to confidentiality, integrity, and availability of PII data, regulatory compliance (GDPR, CCPA), and Canonical's reputation.
Stakeholders: Security Risk Management Team, Data Protection Officer, IT Operations, Legal & Compliance, Product Teams.
2. Risk Identification (ISO 31000 Clause 6.4.2)
Identified risks associated with SharePoint for PII data staging:
RISK-01: Unauthorized Access to PII Data
Description: External threat actors or malicious insiders gain access to SharePoint repositories containing PII data.
Potential Impact: Data breach, regulatory fines, reputational damage.
RISK-02: Data Exfiltration via Sharing Links
Description: Misconfigured sharing permissions or overly permissive sharing links allow unauthorized access to PII data.
Potential Impact: Unauthorized data disclosure, GDPR violations.
RISK-03: Insider Threat - Privilege Misuse
Description: Authorized employees with access to PII data misuse their privileges for unauthorized purposes.
Potential Impact: Internal data breach, compliance violations.
RISK-04: Data Loss or Corruption
Description: Accidental deletion, ransomware encryption, or corruption of PII data stored in SharePoint.
Potential Impact: Loss of critical business data, operational disruption.
RISK-05: Integration & Transfer Risks
Description: Vulnerabilities in the data transfer process between PSP portal and SharePoint, or insecure API integrations.
Potential Impact: Data interception, integrity compromise during transfer.
3. Risk Analysis with FAIR Model & Sensitivity Analysis
Applying Factor Analysis of Information Risk (FAIR) to quantify risk in financial terms:
FAIR Analysis Results
4. Risk Evaluation (ISO 31000 Clause 6.4.4)
Evaluating risks against Canonical's risk appetite and tolerance levels:
Likelihood ↓
Risk Prioritization
Based on FAIR analysis and ISO 31000 evaluation:
- RISK-01 (Unauthorized Access): HIGH priority - High potential financial impact
- RISK-02 (Data Exfiltration): HIGH priority - Significant regulatory exposure
- RISK-05 (Integration Risks): MEDIUM-HIGH priority - Critical data transfer vulnerability
- RISK-03 (Insider Threat): MEDIUM priority - Requires monitoring and controls
- RISK-04 (Data Loss): MEDIUM priority - Managed through backup strategies
5. Risk Treatment (ISO 31000 Clause 6.5)
Recommended risk treatment options based on FAIR ROI analysis:
Treatment 1: Enhanced Access Controls
Action: Implement conditional access policies, multi-factor authentication, and just-in-time privileged access for SharePoint.
Expected Risk Reduction: 40% reduction in Threat Event Frequency
Cost: $15,000 initial + $5,000/year
ROI (Based on FAIR): 3.2:1
Treatment 2: Data Loss Prevention (DLP)
Action: Deploy Microsoft Purview DLP policies to detect and prevent unauthorized sharing of PII data.
Expected Risk Reduction: 60% reduction in Vulnerability
Cost: $25,000 initial + $10,000/year
ROI (Based on FAIR): 2.8:1
Treatment 3: Encryption & Rights Management
Action: Implement Azure Information Protection for encrypting PII data at rest and in transit with usage restrictions.
Expected Risk Reduction: 50% reduction in Secondary Loss Magnitude
Cost: $20,000 initial + $8,000/year
ROI (Based on FAIR): 1.9:1
Residual Risk Assessment
After implementing recommended treatments, estimated residual risk:
Residual risk falls within Canonical's risk tolerance level for PII data management.
6. Monitoring & Review (ISO 31000 Clause 6.6)
Key Risk Indicators (KRIs) for ongoing monitoring:
- Number of unauthorized access attempts to SharePoint PII repositories
- Frequency of DLP policy violations for PII data
- Percentage of PII files with appropriate sensitivity labels
- Time to detect and respond to SharePoint security incidents
Review Frequency: Quarterly risk reviews with monthly KRI reporting to Security Risk Management Team.