Banks, NBFCs, insurers, fintechs and healthcare providers face two pressures at once: attackers who target their valuable data, and regulators who expect demonstrable control. Microsoft 365 can meet both, but only when it is configured and operated with compliance in mind.
This guide explains how to approach Microsoft 365 security for financial services and healthcare.
Microsoft 365 can meet both, but only when it is configured and operated with compliance in mind.
Why are regulated industries different?
- Higher-value data: financial records, payment data, health information and identity documents
- Explicit obligations: sector regulators, data protection laws and industry standards set minimum controls
- Audit and evidence: you must prove controls work, not just describe them
- Incident reporting timelines: many regimes require prompt reporting of significant incidents
- Third-party scrutiny: regulators increasingly examine cloud and outsourcing arrangements
Which frameworks commonly apply?
Requirements vary by country and sector. Organisations we work with commonly map Microsoft 365 controls to frameworks such as ISO/IEC 27001, SOC 2, PCI DSS for payment data, HIPAA for US healthcare data, GDPR for EU personal data, India's Digital Personal Data Protection Act, and sector-specific guidance from financial regulators such as the RBI or SEBI in India. Always confirm your specific obligations with your compliance and legal teams.
How do regulatory requirements map to Microsoft 365?
| Requirement area | Microsoft 365 controls | Evidence you can produce |
|---|---|---|
| Strong authentication | Entra ID MFA, Conditional Access, authentication strengths | Policy exports, MFA registration reports, sign-in logs |
| Least privilege | PIM, role-based access, access reviews | Role assignment reports, review history |
| Endpoint security | Intune compliance, Defender for Endpoint, encryption | Compliance reports, encryption status |
| Data protection | Purview labels, DLP, encryption | Policy configuration, DLP incident reports |
| Monitoring | Defender XDR, Sentinel, unified audit log | Alert and incident records, log retention settings |
| Incident response | Defender automated response, playbooks | Incident timelines, postmortems |
| Retention and records | Purview retention, eDiscovery | Retention policies, hold records |
What are the priority controls for BFSI and healthcare?
- Phishing-resistant MFA for all privileged users and high-risk roles
- Compliant-device requirement for access to customer or patient data
- Just-in-time admin access with Privileged Identity Management
- Purview DLP for financial identifiers and health data
- Email protection with Defender for Office 365 and DMARC enforcement
- Audit log retention long enough to meet regulatory and investigation needs
- 24/7 monitoring with defined response times
- Regular access reviews for employees, vendors and guests
How do you produce compliance evidence efficiently?
Microsoft Purview Compliance Manager evidence tracking
Illustration in progress
- Use Microsoft Purview Compliance Manager to track controls against regulatory templates
- Schedule exports of policy configurations and reports
- Keep change records for every security policy
- Retain audit and sign-in logs in a SIEM for the required period
- Run quarterly evidence reviews before audits, not during them
What about data residency?
Microsoft 365 offers data residency commitments for many countries, including India, covering customer data at rest for Exchange Online, SharePoint, OneDrive, Teams and Copilot, with wider coverage available through the Advanced Data Residency add-on. Confirm residency for each workload you use, and document it for regulators. Consider residency for logs and backups as well.
How Crozaint approaches regulated environments
Crozaint works with clients across banking, financial services, jewellery retail, healthcare and aviation. Our Microsoft 365 security programme starts with a 2–4 week assessment that includes compliance gaps, then deploys Entra, Intune, Defender XDR and Purview with evidence in mind. Compliance evidence is one of the most common questions clients ask us, and our handover documentation is built for auditors as well as engineers.
After deployment, Crozaint Managed provides 24/7 SOC operations and monthly health reports, or your team runs it with full runbooks and training. Both models are reversible, and you retain ownership of tenant and licences.
Common mistakes to avoid
- Treating compliance as documentation rather than enforced controls
- Default audit log retention that is too short for investigations
- No evidence collection until the auditor asks
- Vendor and guest access left unreviewed
- Assuming data residency without confirming each workload
Conclusion
In regulated industries, security must be enforced and provable. Map requirements to Microsoft 365 controls, collect evidence continuously and keep someone watching around the clock.
Preparing for an audit or regulatory review? Book a 30-minute discovery call with Crozaint.
