Microsoft Copilot Case Studies

Challenge

Required HIPAA-compliant Microsoft Copilot deployment across clinical and administrative staff. Existing permissions model allowed PHI access through SharePoint search. Board mandated zero tolerance for data exposure incidents.

Solution

Executed a 6-month phased deployment starting with a 90-day readiness assessment. Implemented Microsoft Purview sensitivity labels for all PHI-containing sites, configured information barriers between clinical departments, and deployed Copilot to administrative staff first before expanding to clinical teams with custom DLP policies.

Key Results

Challenge

Chinese Wall compliance requirements made standard Microsoft Copilot deployment impossible. Information barriers were needed between advisory, trading, and research divisions. SEC and FINRA audit trail requirements added complexity to every AI interaction.

Solution

Designed a custom information barrier architecture using Microsoft Purview and Graph API permissions. Implemented segment-level Copilot policies that enforce Chinese Wall separation. Built automated audit logging for all Copilot interactions with 7-year retention for regulatory compliance.

Key Results

Challenge

Attorney-client privilege protection was non-negotiable. Microsoft Copilot could not surface documents from one client matter in responses to another. Existing SharePoint permissions were overly broad, and conflict-checking processes had gaps that AI could exploit.

Solution

Conducted a full matter-level permissions audit across 180,000 SharePoint sites. Implemented strict matter segregation using sensitivity labels and information barriers. Deployed Copilot with custom Restricted SharePoint Search scoping to prevent cross-matter data leakage. Built privilege-aware prompt guardrails for all AI interactions.

Key Results

Challenge

Required FedRAMP High alignment for Microsoft Copilot deployment. Controlled Unclassified Information (CUI) handling mandated strict data classification. Existing M365 tenant had 4 years of ungoverned SharePoint growth with no sensitivity labels.

Solution

Performed a comprehensive CUI audit and classified 2.3 million documents using automated sensitivity labeling. Implemented NIST 800-171 controls mapped to Microsoft Purview policies. Deployed Copilot in GCC High with custom DLP rules preventing CUI from appearing in AI-generated responses to unauthorized personnel.

Key Results

Challenge

Rapid growth created a fragmented M365 environment with inconsistent permissions. Engineering teams had broad access to HR, finance, and executive SharePoint sites. The CTO wanted Copilot deployed in 90 days to maintain competitive advantage, but security could not be compromised.

Solution

Ran an accelerated 30-day readiness assessment using automated Graph API permission scanning. Identified and remediated 14,000 overshared files in the first two weeks. Deployed Copilot in three waves: IT and engineering first, then business operations, then executive leadership with enhanced DLP controls.

Key Results

Challenge

Claims processing teams had access to sensitive policyholder data across all product lines. A pre-deployment audit revealed that Copilot would surface PII from unrelated claims in AI responses. State insurance regulators required documented controls before AI deployment.

Solution

Implemented product-line-level information barriers separating auto, home, life, and commercial claims teams. Deployed Microsoft Purview auto-labeling policies for policyholder PII. Built a custom Copilot governance dashboard tracking data access patterns and flagging anomalies. Produced regulatory compliance documentation for 12 state insurance departments.

Key Results