The Challenge
As organisations expand Microsoft 365 usage, attack surface increases significantly. Employees access sensitive data from multiple locations and devices. Lack of strong identity governance created high credential theft risk.
The Approach
We implemented a comprehensive identity and access management framework:
- Conditional Access Policies: Rules allowing or blocking access based on location, device compliance, and risk signals
- Multi-Factor Authentication: MFA enforcement for all users
- Role-Based Separation: Application of least privilege principles
The Solution
Multi-layered access control framework developed. All users authenticate with MFA. Conditional Access policies ensure connections from unknown devices or high-risk regions are automatically blocked.
Architecture
Identity Provider
Central authentication service managing user identities
Conditional Access Layer
Policy engine evaluating device compliance, user role, and location
MFA Layer
Push notifications, SMS codes, and hardware tokens
RBAC
Role-based access control enforcing least privilege
Results
- Reduced credential-based attack risk
- Compliance with ISO 27001:2022 Annex A.5.15 and NIS2
- Staff could work remotely without security compromise
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