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5 min read

Top 3 Post-Migration Security Measures for Your New Microsoft Tenant

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The migration from Google Workspace to Microsoft 365 represents a significant advancement in your organization’s technological capabilities. This strategic move is commendable and positions your business for future growth.

However, it is imperative to recognize that this transition is not solely about data transfer; it is equally about securing your new Microsoft 365 tenant against potential cyber threats.

Your Google security configuration that you’ve refined over the years isn't just going to transfer to Microsoft. This is an opportunity to start fresh and do things right - like moving into a new house and setting things up the way they should be. 

Whether you enlisted our assistance for Google migration or followed our comprehensive guides to do it yourself, the next imperative step is to devise a comprehensive security strategy that aligns with the powerful capabilities of your new Microsoft 365 environment. 

Have you mapped out your course of action?  

The logical step forward is to invest in a robust cybersecurity solution. After all, what's the point of undergoing a meticulous migration if you neglect to fortify your cybersecurity defenses? It would be like moving homes without bothering to install an alarm system or even locking the door to your new place! 

In this article, we will discuss the importance of securing your new Microsoft tenant after your Google migration and provide tips on how to do so: 


Deploying Email and Identity Security 

Securing your Microsoft 365 tenant post-Google migration begins with a solid foundation, and at the forefront of this defense strategy are two indispensable pillars: email security and identity security 

These fundamental measures form the bedrock of your cybersecurity efforts but keep in mind that you should adapt and scale with the evolving needs of your business. 


Email Security 

Email is a critical communication tool for businesses, but it is also a common vector for cyber threats (with 94% of cyberattacks infiltrating through email!) Securing email beyond basic defaults is non-negotiable! 

This is what happens when you stick only to the default protection - your users receive spam, you need help refining the system without employees missing email, it can get very confusing.

More than making sure communication is smooth within the company and safeguarding sensitive data, a robust email security solution acts as a shield, protecting your company's brand, reputation, and financial stability. 

Email security is a mix of all tools aimed at keeping your information confidential, coupled with the expertise of IT professionals who deploy and continuously monitor them. Following are some best practices when setting up email security for Microsoft 365: 

  • Utilize Defender for Office 365 to setup Advance Threat Protection utilizing Safe Attachments and Safe Links for Exchange, Sharepoint, OneDrive, and Teams and setup quarantine notification policies 
  • Properly configure DKIM, DMARC, and SPF for Office 365 
  • Establish advanced threat policies for anti-phishing, anti-spam, and anti-malware  
  • Deploy email encryption capabilities with end-user training 
  • Monitor email activity and refine policies 

No one is exempt from this cyber war; it's not just the big corporations or the high-profile CEOs who are in the crosshairs. Businesses of all sizes and across industries are fair game, and every employee is a potential target. 


At BEMO, we prioritize your email security through vigilant monitoring and an alert system that enables us to promptly notify you of any suspicious signs. Our proactive approach ensures that you stay one step ahead, mitigating risks before they escalate. 

Furthermore, our toolkit includes advanced threat intelligence and real-time scanning capabilities. By leveraging these technologies, we effectively shield your organization from spam, malware, malicious links, and other potentially harmful elements. 


Identity Security 

Your identity is more than just a username and password; it is a comprehensive record of your every online move, granting access to everything you share, read, and document.   

Disturbingly, statistics reveal that a significant percentage of employees, approximately 80%, resort to reusing passwords, and shockingly, over 90% of these passwords can be cracked in less than 6 hours! 

 With a fresh start in your new Microsoft 365 tenant, it’s crucial to configure Microsoft Entra identity security best practices immediately so that end users can securely access and use the suite of Microsoft 365 applications without compromising their data or the organization’s digital assets.

This also ensures a seamless transition with minimal disruption to their workflows, while enhancing the overall security posture of the organization


BEMO goes beyond the default settings provided by Microsoft, deploying secure configurations with granular conditional access rules. This ensures that access to sensitive information is controlled and restricted based on specific conditions, enhancing overall security. 

We take a comprehensive approach to identity protection, incorporating Privileged Identity Management (PIM) to safeguard privileged accounts. With secure sign-in protocols using Entra Identity Protection, Self-Service Password Resets (SSPR), Multi-Factor Authentication (MFA) with passwordless sign-on options, and Single Sign-On (SSO), your identity landscape is fortified against unauthorized access and potential security breaches. If you were utilizing equivalent identity security features in Google, these configurations will not migrate over to your new M365 tenant.

It is your responsibility to learn, configure, and monitor these new email and identity protections. And, if you are just learning about them now for the first time, then it is imperative that you plan to implement them ASAP. 

BEMO can help you with that responsibility. Discover more about BEMO’s approach to email and identity security, starting out with our Silver Solution, here 

As I mentioned earlier in this section, these should be your foundational measures, but you have the option to scale up as your business evolves over time, click here to compare all BEMO Cybersecurity Solutions and gain a broader understanding of cybersecurity roadmap you can follow.  

Or directly get in contact with us to find what plan suits you best: 

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Drive Permissions 

The old clash between Google Drive vs OneDrive. If you’ve performed the migration, you probably noticed that they are designed differently and therefore handle permissions differently. When shifting from Google Workspace to Microsoft 365, it's important to ensure that collaborative Drive permissions are correctly configured. 

OneDrive gives you more control over who can do what with your files – like viewing, editing, commenting, or co-authoring. On top of these granular controls, you can block downloads, set expiration dates, and add an extra layer of security with a password. It is very handy if you accidentally share a confidential file with the wrong person, no need to panic, just block access to the attached document. 

Here are some extra features you should get familiarized with in your new Microsoft tenant: 

 Security  (2)

Mobile Device Management (MDM):

You can push security policies, such as device encryption and passcode requirements. You can also remotely wipe information, in case a device is stolen or otherwise compromised. 

Advanced Threat Protection (ATP):

It shields you from nasty files and links, keeping malware and phishing attacks at bay.  

Multifactor Authenticator (MFA):

Users are asked to further verify their credentials through the Authenticator App, with a one-time password (OTP), or through biometric measures, like facial recognition technology or fingerprint scans.  

Data Loss Prevention Policies (DLP):

You get to set rules on who can and can't access sensitive info, making sure you reduce the risk of unauthorized access and stick to data protection standards.   


Third-party Integrations 

Third-party integrations play a crucial role in enhancing productivity and collaboration. However, these integrations also pose significant security risks to organizations.  

Sadly, we’ve all done it sometimes, you click "accept" without checking what you agree with, including giving sketchy permissions.  That’s why keeping an eye on the permissions your users give provides the visibility and control needed for IT to protect both users and applications. 

To combat this, implement an alerting system to notify IT administrators whenever users attempt to integrate third-party applications with the tenant. Or you can directly ban certain app installations and notify your employees, just follow the steps here. 

Also apply policies to control your cloud apps, they enable you to detect risky behavior, violations, or suspicious data points and activities in your cloud environment. Plus, you can integrate remediation workflows to achieve complete risk mitigation.   

If you want to make the most out of Cloud App Security, elevate your stance with BEMO Platinum. This is our most complete cybersecurity plan, which allows you to know which apps are really being used both on and off your corporate network, protect against the risk of Shadow IT, and sophisticated threats. 


Final Thoughts 

Migrating from Google Workspace to Microsoft 365 is a significant undertaking that requires careful planning and execution. However, the importance of securing your new MSFT tenant post-Google migration cannot be overstated.  

By following the best practices outlined in this article, you can effectively protect your organization’s Microsoft 365 environment from cyber threats and even look forward to achieving compliance in the future. 

Don't get stuck or stagnant in the cyber world – it moves swiftly, so you need to move even faster. We're thrilled you've taken the initial step, and the good news is, you don't have to navigate this journey alone. Take the next step with us! 

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