Industry: Registered Investment Advisory / Financial Services Region: North Carolina, United States Engagement Model: White-label delivery for an MSP partner Core Services: Microsoft 365 security audit, compliance mapping, phased remediation
Quick Summary
A registered investment advisory firm managing $2.8B in assets had adopted Microsoft 365 for productivity first — security hardening came later, if at all. MFA wasn’t enforced for executives, external sharing was wide open with anonymous links enabled, and a recent phishing compromise let an attacker sit in a portfolio manager’s mailbox for over 18 hours undetected. Their next SEC exam was already raising concerns about M365 controls.
TechMonarch was engaged through the firm’s MSP partner to run a full-spectrum M365 security and compliance audit built specifically around financial services regulation. The outcome: Microsoft Secure Score climbed from 34% to 87%, the firm’s next SEC examination returned zero monitoring or security findings, and cyber insurance premiums dropped 18% year-over-year.
Meet the Client
This client is a registered investment advisory firm managing $2.8 billion in assets for high-net-worth individuals and institutions, with 65 employees relying heavily on Microsoft 365 for client communications, document management, and day-to-day collaboration.
Like a lot of firms, they’d adopted M365 primarily for productivity, with security treated as something to circle back to later. As regulatory scrutiny increased and cyber threats targeting financial firms escalated, leadership needed to actually know what their real security and compliance posture looked like — not assume it.
(Note: client details have been anonymized at the customer’s request. This is a real engagement delivered through one of TechMonarch’s MSP partners.)
The Challenge: An M365 Environment That Grew Without a Security Framework
Here’s what years of “we’ll harden it later” had actually produced:
MFA existed but wasn’t enforced where it mattered most. It was enabled, but not required for executives and privileged users — exactly the accounts an attacker would target first.
Client financial data had no real protection. No Data Loss Prevention (DLP) policies existed anywhere in the environment.
External sharing was wide open. Anonymous “Anyone” links were enabled, meaning sensitive files could be shared with literally anyone who had the link — no authentication required.
Guest access had been quietly accumulating for years, unmanaged and never reviewed.
Monitoring existed on paper, not in practice. Audit logs were technically enabled, but nobody was actually watching them. Advanced threat protection tools were licensed, sitting unused because they’d never been properly configured.
These weaknesses weren’t theoretical — a recent phishing compromise proved it. An attacker accessed a portfolio manager’s mailbox for over 18 hours without detection. While no confirmed data loss occurred, the firm couldn’t produce the detailed forensic evidence regulators or insurers wanted to see.
The pressure was compounding fast: their latest SEC exam had already raised concerns about M365 controls, their cyber insurance premium had jumped 35%, and their two-person IT team simply didn’t have the deep M365 security expertise to close these gaps on their own. The firm’s MSP partner brought in TechMonarch to run a comprehensive audit built specifically for financial services regulatory requirements.
The Solution: A Full-Spectrum M365 Security & Compliance Audit
We built the audit around the frameworks that actually govern this firm’s obligations — SEC Cybersecurity Rules, Regulation S-P, NIST and CIS Benchmarks, and Microsoft’s own security best practices — not a generic checklist.
Phase 1: Audit Framework & Scope
We assessed Exchange Online, SharePoint, OneDrive, Teams, Azure AD, Defender, and Purview across eight domains: Identity & Access, Data Protection, Threat Protection, Email Security, Monitoring & Response, Device Security, Information Governance, and Compliance Management.
Phase 2: Deep Configuration Review
The findings painted a clear picture of an environment that had never been properly hardened:
- MFA coverage sitting at only 68%
- Legacy authentication still enabled
- Poor privileged access controls
- Zero DLP policies anywhere in the tenant
- Unrestricted anonymous file sharing
- No Defender for Office 365, Defender for Endpoint, or Cloud App Security in use
- Weak anti-phishing protections, with DMARC not enforced
- No retention or litigation hold policies
- No formal incident monitoring or alerting workflows
Phase 3: Risk & Regulatory Mapping
In total, the audit surfaced 47 findings: 12 Critical, 18 High, 11 Medium, and 6 Low. Every single finding was mapped to its specific SEC and privacy compliance implications, so leadership could see exactly which gaps carried real regulatory exposure — not just technical risk.
Phase 4: Phased Remediation Roadmap
Rather than handing over an overwhelming list of 47 fixes, we delivered a structured 14-week security hardening plan: universal MFA and Conditional Access, external sharing restrictions, DLP and sensitivity labels, Defender for Office 365 plus Endpoint, anti-phishing with executive impersonation protection, secure audit logging and monitoring, retention and eDiscovery with litigation hold, privileged access management, and ongoing security reviews and training.
Phase 5: Compliance Documentation
We delivered a full audit report with supporting evidence and regulatory mapping, an executive risk summary for leadership and the board, a step-by-step technical remediation guide, security policies and incident response playbooks, and examiner-ready compliance documentation — everything needed to walk into a regulatory exam with confidence.
The Results
- Microsoft Secure Score increased from 34% to 87%
- 140+ attempted data leaks blocked by DLP in 6 months
- 23 advanced phishing attacks stopped
- 3 malware incidents prevented with Defender for Endpoint
- Guest access fully controlled and audited
- External anonymous sharing eliminated entirely
- Incident detection improved from hours to minutes
- SEC examination returned zero monitoring or security findings
- Cyber insurance premium decreased 18% year-over-year
- eDiscovery legal searches reduced from days to hours
The total remediation investment — roughly $48K — delivered immediate ROI through insurance savings alone, before even accounting for the dramatically reduced breach and regulatory enforcement risk. Just as important, the firm’s own IT staff came out the other side with documented procedures, proper tooling, and ongoing expert support — not a black box someone else has to maintain forever.
Why the MSP Chose TechMonarch
The firm needed more than a generic M365 assessment — they needed financial services compliance expertise paired with genuine Microsoft security specialization.
At the core of the engagement was deep Microsoft 365 security expertise, applied specifically to the identity, data protection, and threat protection gaps that had been quietly accumulating for years. Every finding was tied directly to security and compliance reporting requirements under SEC Cybersecurity Rules and Regulation S-P, so the firm wasn’t just fixing technical issues — they were building the examiner-ready documentation trail regulators actually expect to see.
The audit was designed around SEC and privacy regulations from the start, delivered as practical, regulator-ready documentation rather than a wall of jargon. A phased roadmap replaced what could have been an overwhelming 47-item checklist, and the firm’s own IT team was enabled through training and documentation rather than left dependent on outside consultants. Delivered through the white-label MSP partnership model, the firm kept their trusted provider relationship while gaining specialized expertise they didn’t have in-house.
Rather than creating ongoing consultant dependency, the engagement left the firm with sustainable, auditable, and defensible M365 security operations they could actually run themselves.
Frequently Asked Questions
What does a Microsoft 365 security and compliance audit actually assess? A thorough audit covers identity and access management, data protection, threat protection, email security, monitoring and response, device security, information governance, and compliance management — typically across Exchange Online, SharePoint, OneDrive, Teams, Azure AD, Defender, and Purview.
How does Microsoft Secure Score relate to actual security risk? Secure Score is a Microsoft-provided metric reflecting how well an organization’s M365 configuration aligns with recommended security controls. In this engagement, raising the score from 34% to 87% corresponded with concrete outcomes — 140+ blocked data leaks, 23 stopped phishing attacks, and a clean SEC examination.
Can fixing M365 security gaps actually reduce cyber insurance premiums? It can, when the improvements are documented and demonstrable. In this case, the firm’s cyber insurance premium had previously increased 35% following a security incident; after remediation and proper documentation, the premium decreased 18% year-over-year.
Can an M365 security audit and remediation project like this be delivered white-label for an MSP’s clients? Yes — this entire engagement was delivered white-label, with TechMonarch handling the audit, regulatory mapping, and remediation while the MSP retained full ownership of the client relationship.
Ready to audit your M365 environment? TechMonarch specializes in Microsoft 365 security and compliance audits for regulated industries. We work with MSP partners nationwide to strengthen security posture for financial, healthcare, and professional services firms. Let’s talk.
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