Microsoft 365 includes strong security capabilities, but safe operation depends on configuration and ongoing administration.
1. Administrator accounts
Keep privileged access limited and strongly protected.
2. MFA and access policies
Use controls appropriate to users, devices, locations and risk.
3. Email protection
Review authentication, impersonation protection and reporting processes.
4. External sharing
Understand how Teams, SharePoint and OneDrive data leaves the organisation.
5. Recovery
Clarify retention and independent recovery requirements rather than assuming the platform covers every scenario.
Start with a Microsoft 365 security review.