Cloud Security Reviews
Microsoft 365
Security Review
Reduce account takeover risk and tighten data controls across Exchange, SharePoint, and Teams.
Microsoft 365 is where a lot of sensitive work happens. Small configuration gaps can lead to account compromise, mailbox access, and accidental data exposure. Nexeris reviews identity posture and tenant configurations to help you harden Microsoft 365 in a practical, maintainable way.
- Defense Ready
- Nist 800-171 & CMMC
- Mission Critical
Strategic Value
When a Microsoft 365 Security Review
Is the Right Fit
This is a good fit when you want to reduce common M365 risks and improve visibility without turning settings into a never-ending project.
Common triggers:
- You want to reduce phishing and account takeover risk
- Sharing and access controls feel messy or inconsistent
- You’ve had incidents or near misses involving email, files, or collaboration
- You need stronger configuration evidence for audits or customer reviews
What This Engagement Typically Includes
Identity and Access Hardening
We review tenant identity posture, privileged access, MFA coverage, conditional access patterns, and sign-in risk signals.
Exchange and Mail Flow Controls
We assess mailbox access risk, authentication posture, anti-phishing and anti-spoofing settings, and common mail flow exposures.
SharePoint and OneDrive Sharing Controls
We review external sharing, link settings, default access policies, and controls that reduce accidental exposure.
Teams and Collaboration Configuration
We assess Teams settings that affect file access, guest access, app permissions, and collaboration boundaries.
Logging and Visibility
We validate audit logging coverage and the signals needed to detect risky activity and investigate incidents.
Expected Outcomes
Structured 4-step methodology
01
- Takeover Reduction
Reduced account takeover exposure through stronger identity and access settings
02
- Sharing Control
Better control over sharing and collaboration to reduce data leakage
03
- Risk Visibility
Clear visibility into the highest-risk tenant configurations
04
- Remediation Plan
A prioritized remediation plan your team can execute
The Difference
Why We
Stand Out
We focus on the settings that reduce real risk, not noise. You’ll get clear priorities, practical recommendations, and changes that can be implemented and maintained.
Momentum Focus
We clarify priorities to unblock execution.
Common Questions
Is this only about Microsoft 365 settings, or identity too?
Both. Tenant identity posture is often the biggest driver of takeover risk, so we include identity and access hardening as part of the review.
Will changes disrupt users?
We plan recommendations carefully and call out user-impacting items so you can stage changes appropriately.
Related Services
Comprehensive security solutions for enterprise maturity
Tenant and cloud posture review focused on identity governance and cloud security controls.
Improve escalation and recovery when account compromise happens.
Harden Microsoft 365 without guesswork
If you want a tenant review that leads to practical improvements, Nexeris can help.