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Strengthening Microsoft 365 Tenant Security Posture

Clarent360 conducts structured Microsoft 365 security reviews that assess your tenant configuration against Microsoft security benchmarks, CIS controls, and your organisation's compliance obligations. M365 environments are complex, rapidly evolving, and frequently misconfigured — creating identity, data, and communication risks that standard deployments leave unaddressed.

Our review methodology covers identity and access management, email security, collaboration controls, conditional access policies, and audit logging — delivering prioritised findings with clear remediation guidance mapped to your risk appetite and regulatory requirements.

Comprehensive M365 Configuration Review

End-to-end review of your Microsoft 365 tenant — covering identity, Exchange, Teams, SharePoint, and security policy configurations against benchmark controls.

Regulatory Control Alignment

Review findings mapped to ISO 27001, Essential Eight, NIST CSF, and GDPR — with remediation priorities tied directly to compliance control objectives.

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Precision-Reviewed M365 Security Controls

Clarent360 reviews Microsoft 365 security configurations that organisations frequently deploy without validating against security baselines. Default M365 settings are optimised for usability, not security — leaving gaps in authentication enforcement, data sharing controls, legacy protocol exposure, and audit trail completeness.

Our review team works across Exchange Online, Teams, SharePoint, OneDrive, Entra ID, and Defender for M365 — producing a findings register that quantifies risk, maps remediation effort, and gives your team a clear path to a hardened, audit-ready tenant.

IDENTITY & ACCESS
Entra ID Configuration Review

Review of conditional access policies, MFA enforcement, guest access controls, privileged role assignments, and legacy authentication exposure.

EMAIL SECURITY
Exchange Online Hardening Review

Assessment of anti-phishing, anti-spoofing, DKIM/DMARC/SPF configuration, transport rules, and mail flow security settings.

COLLABORATION
Teams & SharePoint Controls

Review of external sharing policies, Teams guest access, SharePoint permissions, OneDrive sync restrictions, and data handling configurations.

AUDIT & MONITORING
Logging & Alerting Completeness

Assessment of unified audit log configuration, alert policies, sign-in log retention, and integration with SIEM platforms.

Pillars of a Robust M365 Security Review

A thorough Microsoft 365 security review is not a checklist exercise — it is a structured assessment that connects configuration findings to organisational risk. Each pillar ensures coverage of a distinct security domain within the M365 platform.

Identity & Authentication

Review authentication methods, MFA coverage, conditional access policies, and privileged identity configurations across the tenant.

Email & Communication

Assess email security controls — anti-phishing, spoofing protection, mail flow rules, and connector configurations — against current threat vectors.

Collaboration & Sharing

Evaluate external sharing, guest access, Teams permissions, and OneDrive sync policies to identify data exposure risks.

Data Protection Controls

Review Microsoft Purview sensitivity labels, DLP policies, and information barriers applied across M365 workloads.

Audit & Visibility

Assess audit log coverage, alert policy completeness, and SIEM integration to confirm detection and response capability.

Remediation & Hardening

Produce a prioritised remediation register with configuration-level guidance, effort estimates, and compliance mapping.

M365 Security Review Solutions & Key Technical Assurances

Clarent360 delivers Microsoft 365 security reviews that produce actionable findings — not lengthy reports that gather dust. Every review outputs a prioritised remediation register, compliance mapping, and implementation-ready configuration guidance for your engineering team.

"A well-configured M365 tenant is one of the most effective security controls available to an organisation. We review it with the rigour it deserves — finding the gaps that default deployments leave open and giving teams a clear path to close them."

What we deliver

  • Comprehensive review of Entra ID, Exchange, Teams, SharePoint, and OneDrive configurations

  • Conditional access policy assessment against Zero Trust principles

  • Email authentication record validation — DKIM, DMARC, and SPF

  • External sharing and guest access risk identification

  • Unified audit log and alert policy coverage assessment

Technical assurances

  • Findings mapped to CIS M365 Benchmarks, ISO 27001, and Essential Eight

  • Prioritised remediation register with configuration-level implementation guidance

  • Privileged role assignment review and least-privilege recommendations

  • Legacy authentication exposure identification and remediation planning

  • Post-review remediation validation available as a follow-on engagement

Start Your Microsoft 365 Security Review Today

Clarent360 delivers structured Microsoft 365 security reviews and tenant configuration assessments designed to protect your organization from identity, data, and communication risks.

Contact Clarent360