Restrict Guest Access to Allowlisted Domains for HIPAA Compliance
Learn how EXT-03 helps you meet HIPAA requirements for Microsoft 365 and Entra ID security.
Meeting HIPAA standards for Microsoft 365 involves implementing controls like EXT-03 (Restrict Guest Access to Allowlisted Domains). This guide covers the specific HIPAA requirements addressed by this control and how to achieve compliance.
How EXT-03 Addresses HIPAA Requirements
HIPAA requires organizations to implement controls around restrict guest access to allowlisted domains. The EXT-03 control provides:
- Guest invitations are restricted to an allowlist of trusted domains
- Cross-tenant access policies block all other external tenants
- External sharing in SharePoint/OneDrive is restricted to allowed domains
These measures directly support HIPAA compliance by ensuring proper external security in your Microsoft 365 environment.
Implementation for Compliance
To satisfy HIPAA requirements with this control:
- **Enable the control** - Use TrueConfig's one-click remediation
- **Document your implementation** - Record how the control was configured
- **Maintain evidence** - TrueConfig automatically logs compliance status
- **Monitor continuously** - Track any deviations from the expected state
Evidence Collection
For HIPAA audits, you'll need to demonstrate:
- Current configuration state
- Historical compliance data
- Remediation actions taken
- Continuous monitoring in place
TrueConfig provides all of this evidence through its audit trail and reporting features.
Why This Control Matters for HIPAA
At Level 3, external collaboration is tightly controlled. Only pre-approved partner organizations can access your tenant. This prevents social engineering and limits data exposure to vetted third parties.
Implementing EXT-03 is an important step toward HIPAA compliance. Combined with TrueConfig's continuous monitoring, you can demonstrate ongoing adherence to HIPAA requirements.
Ready to achieve HIPAA compliance?
TrueConfig continuously monitors your Microsoft 365 tenant for compliance with HIPAA requirements, including this control.