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Microsoft 365 Security

Microsoft 365 security with identity and access in context.

Review the tenant, prioritize configuration and identity risks, and define how findings, alerts, and changes are handled.

What is included

Tenant controls connected to an operating process.

Available controls and coverage depend on the tenant, licensing, access, and approved scope.

  1. 01Entra ID hardening

    Conditional access policies, MFA enforcement, Privileged Identity Management, and admin account lockdown.

  2. 02Microsoft Defender configuration

    Defender for Endpoint, Defender for Office 365, and Defender for Identity configured, monitored, and integrated into your SOC.

  3. 03Exchange Online security

    DMARC, DKIM, SPF validation, anti-spoofing rules, and transport rules to block common BEC patterns.

  4. 04Teams and SharePoint governance

    External sharing controls, guest access review, and sensitivity labels applied across Teams and SharePoint.

  5. 05Continuous M365 monitoring

    We pipe Microsoft 365 audit logs into your SOC telemetry and alert on suspicious activity in real time.

  6. 06Secure Score improvement

    We track your Microsoft Secure Score and work through a prioritized hardening roadmap each quarter.

Who this helps

Value for the people accountable for the outcome.

The service starts from the decision each stakeholder needs to make, not from a fixed list of tools.

Owner or COO

When this matters

Microsoft 365 is central to daily work, but leadership cannot see who owns tenant security or the most important open decisions.

What changes

The tenant risk is translated into prioritized business decisions, named owners, and a practical next step.

IT or Microsoft 365 administrator

When this matters

Identity, access, sharing, configuration, and alert work compete with user support and tenant administration.

What changes

QuantM can own the agreed security scope or co-manage findings and remediation while your team retains the administration it needs.

Security or compliance owner

When this matters

Client, insurer, or internal reviews require evidence about identity, access, configuration, and response ownership.

What changes

Current controls, findings, remediation decisions, and escalation expectations are documented for the requirements in scope.

Delivery model

Fully managed or co-managed. Responsibilities stay clear.

QuantM can take full responsibility for managed IT, cybersecurity, and AI operations, co-manage them with your team, or own a defined specialist scope beside another provider. The engagement documents who owns each function, decision, and escalation.

Fully managed by QuantM

QuantM operates the agreed IT, cybersecurity, and AI services as your managed provider, including the day-to-day responsibilities defined in scope.

Co-managed with your team

QuantM and your internal team divide operational responsibilities based on your people, capabilities, and priorities.

Specialist scope

QuantM owns a defined service beside your MSP or other providers, with explicit handoffs and escalation paths.

Expected outcomes

A clearer tenant security position.

The service connects configuration, identity, findings, and response to named owners.

  • Tenant scope and administrative roles are documented
  • Identity and configuration findings are prioritized
  • Remediation work has an owner and approval path
  • Monitoring and escalation expectations are explicit

How it works

Start with the tenant you actually operate.

  1. Step 01

    Assess

    Review the current environment, business priority, dependencies, and constraints.

  2. Step 02

    Define

    Agree the scope, responsibilities, access, escalation paths, and expected outputs.

  3. Step 03

    Implement

    Complete the approved changes and connect the service to the people who will operate it.

  4. Step 04

    Review

    Review findings, open decisions, service changes, and the next priority on an agreed cadence.

Related services

FAQ

Common questions, answered.

Questions about scope, ownership, onboarding, and what happens next.

Discuss your situation

Next step

Make Microsoft 365 security ownership visible.

Tell us about the tenant, current licensing, administrators, and the concern that prompted the review.

Discuss Microsoft 365 security