Move Microsoft 365 beyond its default security settings
A default Microsoft 365 tenant is designed for quick setup, not necessarily for the safeguards an organization needs. Conditional access, mailbox auditing, Defender protections, and mail-flow controls deserve deliberate review.
Focus on the settings that reduce avoidable access and email risk: strong sign-in policies, Safe Links and Safe Attachments, mailbox audit logging, and clear ownership of security exceptions.