The Illusion of a 100% Microsoft Environment: How Google appears in the shadow IT of your Organisation

The Illusion of a 100% Microsoft Environment: How Google appears in the shadow IT of your Organisation

And how to regain control at no cost using the Google Admin Console!

“Everyone here uses Microsoft, there is no Google problem.” This statement is frequently heard in IT departments. Yet the reality on the field is often very different. Behind a single and unified choice of apps appears an invisible and particularly risky phenomenon: the shadow IT.

What is Shadow IT?

Shadow IT refers to applications, software or cloud services used by employees at work without the explicit approval or oversight of the IT department. Although users’ intentions are rarely malicious — they are often simply trying to do their jobs more effectively — these practices can create major security and compliance vulnerabilities.

The Google Loophole in a Microsoft Environment

How could employees be able to use Google Drive or Google Meet within an infrastructure that is supposedly supporting Microsoft only?

The answer is simple: because your organisation’s domain has not been secured with Google.

Until an organisation claims ownership of its domain name with Google, any employee can use their professional email address — for example, firstname.lastname@company.com — to create a consumer Google Account.

This action will remain invisible to conventional monitoring systems because it relies on standard web protocols. Your data, however, is leaving the organisation’s secure environment.

A real-world example: During a recent infrastructure project in Q2 2026, a basic audit revealed that more than a quarter of the workforce of one of our clients — approximately 400 out of 1,500 employees — had an active Google Account created using their professional email address, while their IT department was convinced no employees were using Google services at work.

Why Do Employees work around the corporate rules?

Based on our experience and user’s feedback the main explanations are:

• “I need it to work with external partners.” Your customers or service providers use the Google Workspace ecosystem. To collaborate on their shared documents, employees quickly create a Google Account using their company email address.
• “It is linked to my company Android phone.” The organisation provides Android devices. When configuring the personal section of the phone or accessing the Play Store, employees naturally use their professional email address, unintentionally creating an unmanaged Google Account.
• “I need it to continue working from home in the evening.” When remote-access tools are to restrictive, the simplicity of a personally shared Google Drive folder can become an attractive alternative for continuing work outside the office.

The GDPR Risk and Data Loss

This type of work-around creates a critical legal and structural problem.

Google may offer GDPR compliance safeguards, but the data controller within your organisation has a legal obligation to maintain a complete record of all personal-data processing activities and the systems on which they rely.

When the IT department is unaware that data is being transferred to or stored by Google, those data flows do not appear in the organisation’s records of processing activities. In the event of an audit or data breach, the organisation may be held liable for GDPR breaches.

Furthermore, when an employee leaves the business, they may retain access to this unmanaged Google Account and all the professional documents stored within it. This data loss becomes then permanent and virtually impossible to audit.

The effect of Artificial Intelligence and Gemini

The rapid growth of generative artificial intelligence has been dramatically increasing this risk.

Gemini is now natively integrated with, and accessible through, virtually any Google Account. An employee looking to save time may upload financial reports, source code or customer data tin Gemini.

Without centralised oversight, there is no way to know which strategic data is being shared or processed by consumer AI services.

The solution is there and free: the Google Admin Console

Many organisations spend vast budgets on firewalls, proxy servers and complex blocking solutions, which can still be relatively easy to circumvent for some of them.

Sometimes, however, the most effective control is made available directly from the service provider.

Google offers a solution at no cost here. You simply need to create a Google Admin Console account, and then declare and verify your organisation’s domain name.

This straightforward technical step allows you to:

1. Prevent employees from creating consumer Google Accounts using their professional email addresses.
2. Identify and take control of existing accounts created by employees, either by bringing them under management or removing them.
3. Restrict access to services such as Drive, Meet and Gemini within your corporate environment.

Conclusion: Understand the Need to Improve Security

Shadow IT is a symptom of a mismatch between corporate policies and the real needs of users on the field.

Repeating that “Microsoft is the official platform” is simply no longer enough. Users will always find ways around obstacles and adapt their choice of tools to complete their day-to-day work.

Securing your domain is not a declaration of war on Google services. It is a fundamental act of governance.

Whether you decide to prohibit these services or manage their usage properly, the absolute essential first step is to take control of your organisation’s digital identity. And t starts with reclaiming control of your domain.

KromeWork has helped many organisations secure and manage their Google services through our cloud-environment auditing, security and governance services.

Contact us to review your organisation’s adoption of Google services and assess its shadow IT exposure.

Fancy chatting about it with the author Tristan Barthe, Technical Guru at KromeWork → contact@kromework.com