M365 Governance Built for
Regulated Financial Institutions
Banks, broker-dealers, and investment managers face a governance challenge unlike any other industry: the same M365 environment hosts deal communications, client records, regulated correspondence, and increasingly, Copilot AI interactions — all subject to SEC, FINRA, and SOX oversight. Polaris builds the governance foundation that lets financial institutions collaborate freely without crossing regulatory lines.
Regulatory Alert: FINRA Regulatory Notice 24-09 and SEC guidance issued in 2024-2025 explicitly place AI tools — including Microsoft 365 Copilot — within the scope of supervisory system requirements for broker-dealers and investment advisers. Firms enabling Copilot without documented governance controls face examination risk.
The Governance Challenges Financial Institutions Face in M365
Financial services organizations operate M365 environments of extraordinary complexity and regulatory sensitivity. These are the five governance risks that generate the most regulatory exposure.
SEC 17a-4 Electronic Records Retention
SEC Rule 17a-4 / FINRA Rule 4511Financial firms must preserve electronic communications — including Teams messages, SharePoint documents, and OneDrive files — in a non-rewriteable, non-erasable format for 3-6 years. Most M365 tenants are not configured to meet this standard by default, creating regulatory exposure that grows with every Copilot interaction that is not captured.
Material Non-Public Information (MNPI) Exposure
SEC Rule 10b-5 / Information Barrier RequirementsInvestment banks and broker-dealers managing M&A transactions, earnings calls, and trading desks face an existential risk: M365 oversharing can inadvertently expose MNPI across information barriers. Microsoft 365 Copilot amplifies this risk by surfacing previously obscure documents in AI-generated responses, potentially crossing Chinese walls that took years to construct.
SOX Section 404 IT General Controls
SOX Sections 302, 404 / PCAOB AS 2201Sarbanes-Oxley requires documented, tested controls over financial reporting systems. M365 — which hosts financial models, board materials, and CFO communications — is in scope for IT General Controls (ITGC) testing. Without automated configuration monitoring, audit evidence collection, and access control documentation, SOX ITGC testing becomes manual and error-prone.
Copilot Readiness in Regulated Trading Environments
FINRA Regulatory Notice 24-09 / SEC AI GuidanceDeploying Microsoft 365 Copilot in a financial institution without prior data remediation is the fastest path to a regulatory examination finding. Copilot respects existing M365 permissions — which means years of accumulated oversharing, broken information barriers, and ungoverned guest access become AI-accessible immediately. Financial regulators are actively examining AI use in supervised activities.
Guest Access and External Collaboration Risk
GLBA / SEC Regulation S-PFinancial firms routinely collaborate with external counsel, advisors, auditors, and counterparties through Microsoft 365. Each external guest represents a potential data exfiltration vector. In M365 tenants with thousands of active deal rooms, tracking guest access, enforcing expiration policies, and maintaining audit trails is operationally impossible without automated governance tooling.
How Polaris Addresses Financial Services Governance
Our financial services practice combines M365 technical expertise with direct experience in regulated environments. Every engagement is led by practitioners who understand both the technology and the regulatory framework it operates within.
Information Barrier Audit and Enforcement
Polaris maps your existing M365 information barriers against your organizational chart and deal team structure, identifying gaps where regulated users share access to sensitive workspaces, channels, or documents.
- Complete inventory of information barrier policy coverage across Teams, SharePoint, and Exchange
- Identification of all permission exceptions, guest users, and ungoverned sharing links that cross information walls
- Automated monitoring for new permission grants that violate established information barriers
- Audit-ready evidence package for FINRA examination readiness
Copilot Readiness Assessment — Financial Services Edition
Our financial services Copilot readiness assessment evaluates your M365 environment against the specific risk profile of a regulated financial institution before you enable Copilot for any user population.
- Sensitivity scoring of every SharePoint site, Teams channel, and OneDrive folder accessible to your intended Copilot users
- Identification of MNPI-risk content accessible to users who should not have visibility
- Pre-Copilot remediation roadmap with prioritized oversharing corrections
- Post-remediation validation confirming AI-safe access boundaries
SOX ITGC Evidence Automation
Polaris automates the collection and documentation of IT General Controls evidence for your M365 environment, reducing audit preparation time by 60-80% while improving evidence quality.
- Automated access review reports for privileged M365 roles (Global Admin, SharePoint Admin, Exchange Admin)
- Configuration baseline documentation with change detection and drift alerting
- Segregation of duties analysis for M365 administrative functions
- Pre-formatted evidence packages aligned to PCAOB AS 2201 requirements
SEC 17a-4 Communication Capture Configuration
We configure your M365 retention policies, compliance recording, and supervision workflows to meet SEC 17a-4 and FINRA 4511 requirements for electronic communications preservation.
- Teams, Exchange, and SharePoint retention policies configured for regulated users
- Supervision policy configuration for review of electronic communications
- Immutable storage configuration for records that require non-rewriteable preservation
- Annual certification process for records retention compliance
Regulatory Frameworks We Address
Polaris maps M365 configuration and governance controls directly to the regulatory requirements financial institutions must satisfy.
| Framework | Applicable To | M365 Governance Impact |
|---|---|---|
| SEC Rule 17a-4 | Broker-dealers, investment advisers | Electronic communications retention, non-rewriteable storage, supervisory review workflows |
| FINRA Rule 4511 | FINRA-registered broker-dealers | Books and records retention, electronic storage requirements, supervisory system documentation |
| SOX Sections 302 & 404 | Public company issuers and their IT systems | IT General Controls over financial reporting systems, access control documentation, change management |
| Regulation S-P | SEC-registered investment firms | Customer financial information safeguarding, third-party vendor access controls, breach notification |
| GLBA Safeguards Rule | Financial institutions broadly | Customer data protection, information security program documentation, third-party service provider oversight |
| FINRA Rule 3110 | FINRA member firms | Supervisory system requirements for digital communications, review and approval workflows, exception reporting |
Start with a Financial Services Governance Assessment
Our financial services assessment delivers a complete picture of your M365 governance posture — identifying regulatory gaps, information barrier coverage, and Copilot readiness in a single engagement. Typical timeline: 4 weeks. Typical output: an audit-ready remediation roadmap.