Contact Us

Microsoft 365 Security Assessment

Home » Microsoft 365 Security Assessment
Peace of Mind

Gain Confidence in Your Microsoft 365 Security Posture

Microsoft 365 is a core platform for identity, collaboration, and data — and a prime target for attackers. Misconfiguration, over-permissive access, and control gaps remain some of the most common causes of compromise in Microsoft 365 environments.

Metis Security provides a Microsoft 365 Security Assessment designed to give you a clear, evidence-based understanding of how secure your tenant really is — and what matters most to fix.

Our assessment goes beyond surface-level checks. We evaluate identity and access controls, threat protection, data protection, and governance, combining technical analysis with risk and control maturity review where required. The outcome is a prioritised, actionable view of your Microsoft 365 security posture.

We focus on clarity over noise. You won’t receive a checklist or a generic scorecard — you’ll receive findings that explain what is wrong, why it matters, and what to do next.

Identity and Access Management

We review Entra ID configuration, authentication controls, and access governance to identify weaknesses that could lead to account compromise or privilege abuse. Typical focus areas include:

  • Authentication and MFA enforcement
  • Privileged Identity Management (PIM)
  • User, group, and role configuration
  • Guest and external access controls

Threat Protection

We assess whether your Microsoft 365 security tooling is correctly configured to detect and respond to real-world threats. Typical focus areas include:

  • Microsoft Defender configuration and coverage
  • Alerting, monitoring, and response capability
  • Logging and audit readiness
  • Visibility gaps that reduce detection effectiveness

Data Protection

We evaluate how well your data is protected against loss, misuse, or unauthorised access. Typical focus areas include:

  • Data classification and labelling
  • DLP configuration and effectiveness
  • Information Rights Management
  • External sharing and data exposure risks

Compliance and Governance

We assess whether governance, policy, and operational controls support secure and compliant use of Microsoft 365. Typical focus areas include:

  • Policy and control alignment
  • Risk management and change control
  • Monitoring, reporting, and audit readiness
  • Alignment with regulatory or framework expectations
How you will Gain

Benefits

Proactive Risk Reduction

Identify configuration and control gaps before they are exploited

Clear Compliance Insight

Understand where gaps exist and what is required to address them.

Improved Security Posture

Strengthen identity, data, and threat controls across Microsoft 365.

Actionable Recommendations

Practical remediation guidance prioritised by risk and impact.

Operational Confidence

Reduce uncertainty around how your tenant is actually configured.

Peace of Mind

Assurance that your environment has been reviewed by specialists who understand how it is attacked.

HOW WE HAVE HELPED IN THE PAST

Case Studies

Supporting Material

Blog Posts on M365 & Assessments

STREAMLINED AND EFFICIENT

Engagement Approach

  1. Discovery & Scoping – Understand your tenant, objectives, and risk drivers

  2. Assessment – Technical and/or governance review based on agreed scope

  3. Reporting – Clear findings, risk context, and remediation guidance

  4. Follow-Up – Optional support to validate or implement improvements

COMPETITIVE AND BESPOKE

Typical Pricing Options

Technical Assessment

Focused technical review of a single Microsoft 365 tenant.
3 -5 days
  • Identity & access configuration
  • Data protection controls
  • Defender, audit, and alerting configuration
  • Core M365 services (Entra ID, Exchange, SharePoint, Teams, OneDrive, Purview)

Comprehensive Assessment

Extends the technical assessment with governance and risk review.
8-10 days
  • Control maturity review
  • High-level threat and risk assessment
  • Governance, policy, and change management review
  • Alignment with NCSC Cloud Security Principles
  • Licensing and future-state considerations

Custom Quote

For complex environments or advanced requirements.
Custom
  • Multiple Microsoft 365 tenants
  • Additional control frameworks
  • Deep dives into Intune, Defender for Endpoint, or specialist services
Unlock the Full Potential of Your M365 Environment

Setup a No Obligation Discussion

Booking Form