M365 Security Baseline Assessment - Nubrix Security

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Microsoft 365 Security Baseline Assessment

Overview

Strong Microsoft 365 security begins with secure configuration. Our M365 Security Baseline Assessment is a structured, configuration-level review of your tenant aligned with CISA guidance and Microsoft security best practices.

Rather than focusing on long-term strategy, this engagement evaluates your current settings across core Microsoft 365 services to identify misconfigurations, high-risk exposures, and security gaps. The goal is to provide a clear, actionable view of where your environment stands today and what should be addressed first.

This assessment is designed to deliver immediate, practical insight into your security posture.

What the Assessment Covers

Our M365 Security Baseline Assessment focuses on configuration validation across core Microsoft 365 workloads, including:

  • Identity and authentication configuration (Entra ID) fundamentals
  • Conditional Access policies and MFA enforcement
  • Exchange Online security and mail flow protections
  • SharePoint and OneDrive configuration settings
  • Defender security controls and protection posture
  • External sharing, collaboration, and tenant restrictions
  • Legacy authentication exposure and risk areas
  • Administrative roles and privileged access configuration

The assessment is technical, evidence-based, and tailored to your tenant’s size, licensing model, and business risk profile.

Assessment Approach

We conduct the assessment using a structured methodology aligned to CISA Secure Cloud Business Applications (SCuBA) guidance and Microsoft security baselines.

Deliverables

At the conclusion of the assessment, customers receive:

  • An executive summary of key findings
  • A detailed configuration findings report
  • Identified gaps aligned to CISA and Microsoft guidance
  • A prioritized remediation plan with clear next steps
  • Recommendations mapped to Microsoft 365 security capabilities

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