Managed Microsoft 365 Security
Microsoft 365 security is not a one-off hardening exercise. The platform changes continuously, new features appear and configuration can drift as users, exceptions and business requirements evolve.
ACEN’s Managed Microsoft 365 Security continuously checks your tenant, fixes what drifts and turns findings into concrete improvements. The service is delivered at a fixed monthly price with remediation capacity included.
The Microsoft 365 security baseline changes over time
A configuration that was appropriate months ago may no longer reflect current platform capabilities or risks.
Continuously monitor security posture
Regularly assess the tenant for misconfiguration, exceptions, control gaps and relevant platform changes.
Findings do not automatically become improvements
Assessments often produce long lists that internal teams do not have time or specialist capacity to remediate.
Prioritise and execute protective remediation
Turn posture findings into an agreed roadmap and implement the changes that reduce the most meaningful risk.
Microsoft 365 requires specialised attention
The platform and security roadmap change too quickly for many small internal teams to follow continuously.
Add continuous expert guidance
A dedicated ACEN expert reviews posture and priorities with the customer and helps keep the environment aligned over time.
What can you expect?
Microsoft 365 security that keeps up with change
New features, shifting defaults and a roadmap that changes month by month: for the Federal Planning Bureau’s IT team, keeping up with Microsoft 365 was a job in itself.
ACEN scans the Microsoft 365 tenant daily for misconfigurations, unusual exceptions and new security opportunities. Regular expert reviews turn findings into proactive improvements while the internal IT team keeps focus on its core work.
The Federal Planning Bureau now has a clear mapping of rights and policies and can demonstrate how it meets its security obligations.
How we do Managed Microsoft 365 Security
- Establish the baseline
- Assess posture
- Prioritise and implement
- Review and evolve
Phase 1 Establish the tenant baseline
Review the Microsoft 365 environment, security configuration, identities, exceptions and operational priorities to create a clear starting point.
Phase 2 Continuously assess posture
Monitor configuration for misconfigurations, risky exceptions, drift and relevant changes in Microsoft security capabilities.
Phase 3 Prioritise and implement remediation
Translate findings into concrete protective actions, balancing security impact, business requirements and change management.
Phase 4 Review and evolve the roadmap
Use recurring expert reviews to track progress, discuss new risks and capabilities, report on compliance needs and keep the security posture aligned with business priorities.
Why cybersecurity is never a hole‑in‑one
Microsoft 365 is a solid foundation, but its security depends on configuration. And on what happens on day 366.
Once the project ends and the consultants leave, new users, extra tools and temporary exceptions pile up, and settings that were once correct slowly age. “We use Microsoft, so we must be fine” is a false sense of safety.
Get every device on the same baseline.
