Why Microsoft Defender for Office 365?

Email remains one of the most common entry points for cyber attacks, with phishing, business email compromise and malicious links continuing to target users across every industry. Microsoft Defender for Office 365 helps organisations reduce this risk by providing advanced protection across email, collaboration and file-sharing services within Microsoft 365. 

What's Included


CyberOne offers deployment services designed to align with varying organisational requirements and cloud security maturity levels. 

The engagement helps enable key Microsoft Defender for Office 365 capabilities, supporting stronger protection across email, users and collaboration workloads. 

✔ Discovery workshop to understand your Microsoft 365 and email security environment.

✔  Review of current email security tooling and Microsoft licensing position.

✔ Microsoft Defender for Office 365 design aligned to Microsoft best practice

✔ Configuration of core Microsoft Defender for Office 365 policies

✔ Anti-phishing policy configuration guidance

✔Anti-malware policy configuration guidance

✔ Safe Links and Safe Attachments configuration guidance, where applicable

✔ Impersonation protection configuration guidance, where applicable

✔ Support for greenfield deployments or migration from existing email security tools

✔ Knowledge transfer to help your team use Microsoft Defender for Office 365 effectively

✔ Roadmap guidance to improve value from your Microsoft 365 security investment

✔ Final design document covering configuration, decisions and recommended next step

Protect Your Business Email with Microsoft Defender for Office 365

Accelerate deployment and strengthen protection against phishing, malware, business email compromise, and advanced threats.

Get More From Microsoft 365 With Integrated Email Security

CyberOne’s Microsoft Defender for Office 365 Deployment service helps organisations design, configure and optimise Microsoft Defender for Office 365 around their Microsoft 365 environment, business requirements and risk profile. 

Brief

Advanced Phishing Protection

Strengthen protection against sophisticated phishing attacks with policies designed to identify suspicious senders, domains and messages before they reach users.

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Safe Links

Analyse URLs and help block access to known malicious destinations, providing additional protection when users click links in email and supported Microsoft 365 applications.

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Anti-Malware Protection

Apply Microsoft Defender for Office 365 controls to identify and block malicious files, helping strengthen protection across your Microsoft 365 environment.

 

Prioritied

Integrated Threat Investigation

Give security teams greater visibility into suspicious email activity, supporting faster investigation and a clearer understanding of potential threats.

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Microsoft 365 Integration

Extend protection across Microsoft email and collaboration workloads, helping organisations simplify security operations within their existing Microsoft environment.

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Optimised Microsoft Investment

Use capabilities already available within your Microsoft security ecosystem more effectively, helping reduce unnecessary tool overlap and improve return on existing licences.

Who Is This Service For? 

Every engagement is tailored. There are no fixed tiers, only an agreed scope of outcomes  aligned to your goals.

New Deployments

For organisations introducing Microsoft Defender for Office 365 and looking for a structured, best-practice deployment from the outset.

Security Migrations

For businesses moving away from third-party email security platforms and looking to consolidate protection within Microsoft 365.

Microsoft 365 Optimisation

For organisations already invested in Microsoft 365 that want to improve security controls and gain more value from existing licences.

Limited Internal Capacity

For IT and security teams that need specialist support with policy design, configuration and deployment without increasing internal workload.

Risk Reduction

For organisations concerned about phishing, business email compromise, malware and other email-based threats affecting users and operations.

Security Improvement

For businesses that want a stronger security baseline, clearer configuration and a practical roadmap for continued Microsoft 365 improvement.

Protecting Microsoft 365 Communications and Collaboration

Microsoft Defender for Office 365 helps organisations reduce the risk of email-borne threats, phishing attacks and malicious content across Microsoft 365 environments.

Key Microsoft Technologies 

  • Microsoft Defender for Office 365: Protects supported Microsoft 365 communication and collaboration workloads from advanced threats.

  • Microsoft Defender XDR: Correlates email signals with identity, endpoint and cloud activity, where applicable.

  • Microsoft Exchange Online: Provides the core email environment protected by Defender for Office 365.

  • Microsoft Teams: Extends relevant protection to collaboration messages and links, where applicable.

  • Microsoft SharePoint Online: Supports protection of files and content within collaborative workspaces, where applicable.

  • Microsoft Defender Portal: Provides centralised policy management, alerting, investigation and reporting.

Microsoft 365 Communications and Collaboration

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Frequently Asked Questions

What Is Microsoft Defender for Office 365?

Microsoft Defender for Office 365 is Microsoft’s email and collaboration threat protection platform. It helps organisations protect users against phishing, business email compromise, malware and malicious content across Microsoft 365.

What Does Microsoft Defender for Office 365 Protect Against?

Depending on licensing and configuration, Microsoft Defender for Office 365 can help protect against phishing, impersonation attempts, malicious links, harmful attachments and malware delivered through email and collaboration services.

Why Is Correct Configuration Important?

Microsoft Defender for Office 365 includes a wide range of security controls, but their effectiveness depends on how they are configured. CyberOne helps align policies with Microsoft best practice, your business requirements and your risk profile to reduce gaps and inconsistent protection. 

What Is Included in CyberOne’s Microsoft Defender for Office 365 Deployment Service?

The service includes discovery, review of your existing email security environment and relevant Microsoft licensing, solution design, configuration of agreed policies, knowledge transfer, final documentation and roadmap guidance for continued improvement.

Will This Replace All of Our Existing Email Security Tools?

Not necessarily. Whether existing tools can be consolidated or retired depends on your environment, licensing, security requirements and current architecture. CyberOne reviews these factors during discovery and provides recommendations based on your agreed objectives.

Is Microsoft Defender for Office 365 Suitable for Organisations With Existing Microsoft 365 Investments?

Yes. It can be particularly relevant for Microsoft-centric organisations looking to strengthen protection, simplify their security environment and maximise the value of capabilities available within the Microsoft ecosystem.

How Protected Is Your Organisation Against Modern Email Threats?

Connect with CyberOne to explore how Microsoft Defender for Office 365 can help safeguard users, data, and communications from phishing, malware, and business email compromise.