Office 365 CIS Security Review

Strengthen Your Cloud Security with RedSecLabs. At RedSecLabs, we provide a comprehensive Office 365 CIS Security Review designed to align your Microsoft 365 environment with the Center for Internet Security (CIS) benchmarks, ensuring maximum protection against cyber threats and compliance risks.

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Free Security Quote

Just a few questions to scope your project. We respond the same business day.

UK-based CREST member · QSA-aligned methodology · Same-day scoping response · Executive + technical reports · Retest included

Why You Need an Office 365 CIS Security Review

While Office 365 offers robust security features, most organizations fail to configure them properly, leaving critical gaps that attackers can exploit. Misconfigurations, weak authentication, and overlooked settings often become the root cause of breaches. Our CIS Security Review identifies these vulnerabilities and helps you implement security best practices recommended by CIS to safeguard your data, users, and applications.

Benefits of Choosing RedSecLabs

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· Expertise in CIS Benchmarks

Our specialists ensure your Office 365 security aligns with global best practices.

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Tailored Recommendations

We customize security improvements based on your organization’s risk profile.

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Proactive Defense

Reduce the likelihood of phishing, data breaches, and insider threats.

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Compliance Readiness

Support for GDPR, ISO 27001, HIPAA, and other regulatory frameworks.

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End-to-End Support

From assessment to implementation and monitoring, we ensure long-term resilience.

What We Deliver

Our Office 365 CIS Security Review covers all key security pillars, ensuring your Microsoft 365 environment is resilient and compliant:

01

Identity & Access Management

Enforce MFA, conditional access, and secure authentication policies.

02

Data Protection & Compliance

Review data loss prevention (DLP), encryption, and regulatory compliance controls.

03

Email & Collaboration Security

Secure Exchange Online, SharePoint, OneDrive, and Teams against phishing, spam, and unauthorized access.

04

Threat Detection & Response

Assess Microsoft Defender for Office 365, alerting mechanisms, and incident response readiness.

05

Configuration Gap Analysis

Compare your Office 365 settings with CIS benchmarks and identify areas of non-compliance.

06

Actionable Recommendations

Provide a prioritized remediation roadmap to strengthen your security posture.

Office 365 CIS Security Review Process

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Office 365 CIS Review

Scoping & Access Setup

Identify Office 365 tenants and required admin roles to enable read-only review.

Data Collection

Pull configurations from Exchange, SharePoint, Teams, OneDrive, and Azure AD using secure methods.

CIS Benchmark Mapping

Analyze configurations against CIS Level 1 & 2 controls for Microsoft 365 security hardening.

Findings & Risk Prioritization

Identify misconfigurations and prioritize them based on risk severity and business impact.

Reporting & Recommendations

Deliver a detailed report with compliance score, gap summary, and practical remediation steps.

Remediation Support (Optional)

Assist with implementing changes, configuring security policies, and enabling CIS-aligned protections.

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Secure Your Microsoft 365 Environment Today

Cyber threats are evolving every day, but with RedSecLabs’ Office 365 CIS Security Review, you can stay ahead of attackers and safeguard your business operations. Our team of cybersecurity experts ensures your Microsoft 365 environment is configured, monitored, and optimized to meet the highest standards of security.

What our Customers are Saying

We are trusted by numerous companies from different business to meet their needs

“Working as a cybersecurity consultant, RedSecLabs has improved the security posture of Bykea by formulating a Cybersecurity Framework for Developers and had worked towards incorporating DevSecOps. It had also contributed towards improving Bykea's vulnerability disclosure program (VDP) by preparing end-to-end process documents and has developed relevant policies to facilitate the organisation's security posture. Given, RedSecLabs' broad experience in a wide range of cybersecurity domains, it can be a tremendous asset to any organisation.”

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Muneeb Maayr CEO, Bykea
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“RedSecLabs was a pleasure to work with. Its knowledge of the cybersecurity space was impressive. It helped us build a specific capability we'd been looking at for a while. It was responsive to our questions and quick to turn the work around. It also took our feedback on board and made changes to the work where appropriate. We'd definitely work with RedSecLabs. ”

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Ed Hutchinson The Independent
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“The team at RedSecLabs is very communicative and responds quickly. They are highly knowledgeable in what they do and make suggestions when needed. I felt very comfortable with RedSecLabs performing the pen test in our environment and felt like we were in good hands. I would highly recommend RedSecLabs for any pen testing jobs you may have.”

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Aleks Daranutsa Nhebo
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“We are very pleased with the services provided by RedSecLabs. They were highly professional, and their work was outstanding. The team at RedSecLabs went above and beyond during the course of the project. When an unforeseen issue arose mid-project, they took the initiative and helped us repair an additional issue, unrelated to the original scope. This saved us a considerable amount of time and resources. We will continue working with RedSecLabs on future projects and look forward to a long-term partnership. ”

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Bill Fahy Atlantic Firearms
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“RedSecLabs has been instrumental in solving Work Generations Cybersecurity challenges. Their expert team provides unparalleled protection and swift responses to potential threats. Their innovative solutions and dedication to client security are truly commendable. Highly recommend RedSecLabs for high-quality cybersecurity services.”

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Shawana Iftikhar Work Generations
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You have Questions, We have Answers

An Office 365 CIS Security Review assesses your Microsoft 365 environment against CIS (Center for Internet Security) benchmarks to identify security gaps and misconfigurations that could expose your organization to risk.

CIS benchmarks are globally recognized security best practices. Following them helps reduce your attack surface and ensures a consistent, defensible security posture for your Office 365 tenant.

The review typically includes Exchange Online, SharePoint Online, Teams, OneDrive, Azure AD configurations, MFA enforcement, mailbox auditing, logging, and more,aligned to CIS Level 1 & 2 benchmarks.

Yes, Global Admin or Security Reader roles are typically required to access the necessary settings and perform a thorough review.

No. The review is non-intrusive and read-only. We only provide a detailed report and prioritized remediation plan. Actual changes are made with your consent and involvement if required.

We recommend conducting a CIS review annually or after any major Office 365 configuration changes, mergers, or onboarding of new users and services.

You’ll receive a detailed security assessment report, CIS compliance score, prioritized remediation roadmap, and best practice recommendations tailored to your environment.

No. The assessment is conducted passively using read-only access and does not interfere with normal operations or affect user access.

Yes, we provide hands-on support to help implement recommendations, fine-tune configurations, and ensure your Office 365 environment aligns with CIS benchmarks.

Our team combines deep Microsoft 365 expertise with cybersecurity know-how. We don’t just run tools,we interpret results, prioritize risk, and deliver real-world security insights.
Before you decide
Download a sample report
A redacted RedSecLabs penetration test report. See the format, depth, and clarity your team will receive.
Talk to us
Book a scoping call
A 30-minute call covers realistic effort, timeline, and a fixed-scope quote. CREST-aligned methodology, UK-based testers.
What you receive

Every engagement includes

  • Scoping call. A 30-minute call to define scope, timeline, and authorisation boundaries.
  • Test plan. Written test plan covering targets, methodology, and rules of engagement.
  • Technical report. Detailed findings with reproduction steps, evidence, and remediation guidance.
  • Executive summary. Board-ready summary with risk ratings and business impact.
  • Audit-ready evidence. Findings letter formatted for auditors, customers, and supervisory authorities.
  • Retest letter. Free retest of remediated findings within agreed window. Confirmation letter included.
  • Remediation call. A call with our lead tester to walk through findings and remediation strategy.
How we deliver

Our process, end to end

  1. 1
    Scoping call & fixed-scope quote
    A 30-minute call. We define scope, targets, timeline. You get a fixed-scope quote within one working day.
  2. 2
    Test plan & authorisation
    Written test plan covering methodology, targets, and rules of engagement.
  3. 3
    CREST-aligned execution
    Senior tester runs the engagement. Critical findings flagged immediately during testing.
  4. 4
    Technical + executive report
    Detailed technical findings with reproduction steps. Board-ready executive summary.
  5. 5
    Remediation call & retest
    Walkthrough with our lead tester. Retest of remediated findings within the agreed window.
Engagement scope

What shapes the quote

Small scope
Focused scope, smaller surface. 5-7 working days.
Medium scope
Multi-role, several integrations. 8-12 working days.
Enterprise scope
Complex environment, compliance evidence. 12-25 working days.
Fixed-scope quote within 1 working day
No surprise invoices. We commit to a number before you commit to us.
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