Planning Your Office 365 Security Strategy

If your organisation is migrating to Microsoft 365 (formerly Office 365), have you factored security into your planning? While moving to the cloud offers flexibility and cost savings, it also introduces new security challenges. Many businesses focus on the logistics of migration but overlook how to secure their email environment along the way.

One common question we hear is: “Do I need additional security if Microsoft 365 already has built-in protection?” The reality is that while Microsoft provides baseline security measures, advanced threats like targeted phishing, business email compromise (BEC), and ransomware require a more comprehensive defence.

Key Security Considerations for Microsoft 365

Phishing remains the #1 method cybercriminals use to gain access to networks, just as cost efficiency remains the leading reason businesses migrate to Microsoft 365. However, without a well-planned security strategy, the total cost of ownership (TCO) benefits can quickly disappear due to security incidents, downtime, or compliance issues.

When planning your security approach, ask:

✅ How does Microsoft 365 handle advanced phishing threats, including malicious links and attachments?
✅ Can I get visibility into phishing attempts and the attacks my users have fallen for?
✅ What measures are in place to prevent data loss and insider threats?
✅ Do I have email continuity options in case Microsoft 365 experiences an outage?
✅ Is the threat response time fast enough to mitigate risks before damage is done?

Building the Right Security Strategy

Your security approach should align with your business needs:

• Augmenting Microsoft 365’s built-in security with advanced threat protection like Proofpoint Essentials ensures protection from phishing, malware, and zero-day attacks.

• Hybrid email security models can support your transition to the cloud, allowing you to maintain security controls during migration or as a long-term solution.

• Email continuity services ensure uninterrupted access to emails, even if Microsoft 365 experiences downtime.

• Data Loss Prevention (DLP) and encryption solutions help secure sensitive data and prevent breaches.

At Net Protocol, we help businesses secure their Microsoft 365 environments while maximising TCO benefits. Our experts provide tailored security solutions that address threats before, during, and after migration.

Get Expert Security Guidance

If you’re considering or already moving to Microsoft 365, it’s never too early to plan your security strategy. Contact Net Protocol’s security experts on 0330 055 3385 for a consultation or visit our security solutions page to learn more.