Knowledge base

February 05, 2025

Classification Matrix: Manage sensitive documents effectively

 

At a time when data breaches regularly make the news, it is crucial for organizations to properly manage sensitive documents. A classification matrix is a powerful tool in this regard. It not only helps organize documents, but also provides a clear overview of how they should be secured.

In this blog, I explain what a classification matrix is, why it is important, and how to create one. ✅

What is a classification matrix? 📊

A classification matrix is a model that organizations use to classify documents according to their sensitivity and security needs. This often involves the use of a BIV classification, which stands for Availability, Integrity and Confidentiality.

With the BIV classification, you assess:

  • Availability: How important is it that a document is always accessible?
  • Integrity: How critical is it that the content of a document remains accurate and unchanged?
  • Confidentiality: How sensitive is the information and who is allowed to see it?

These BIV factors form the basis for determining the classification of a document.

 

 

Why a classification matrix is essential 🌟

Proper classification prevents errors and increases the security of your data.
Here are some advantages:

  • 🔐 Protects sensitive data: Restrict access to confidential information.
  • 📋 Ensures consistency: Everyone in the organization knows which rules apply to which documents.
  • Increases efficiency: Less time spent searching or doubting how to handle a document.
  • Compliance with legislation: Think AVG, GDPR or other data security regulations.

 

 

This is how to create a classification matrix: A step-by-step plan 🛠️

Creating a good classification matrix does not have to be complicated. Just follow this roadmap:

  1. Identify the types of data 🗂️
    • Analyze what types of information occur within your organization (e.g., HR files, customer contracts, emails).
  2. Determine sensitivity levels 🔒
    • Create categories such as:
      • Public 🌍 (accessible to all).
      • Internal 📁 (employees only).
      • Confidential 🔐 (for specific teams only).
      • Highly confidential 🚨 (accessible only to management or security).
  3. Define access levels 🚦
    • Establish who has access to each type of document.
  4. Establish policies and procedures 🖋️
    • Make sure employees know how to label and secure documents.
  5. Implement technology 💻
    • Use tools such as Microsoft Purview³, Azure Information Protection⁴, or other Data Loss Prevention (DLP) tools to implement classification automatically.
  6. Train your employees 🎓
    • Make sure everyone is aware of the classification policy.

 

 

 

Tools and technology for document classification 🛡️

The right technology can make a world of difference. Some popular tools:

  • Microsoft Purview: For data classification and regulatory compliance.
  • Azure Information Protection: Add labels to sensitive files and control who can access them.
  • Data Loss Prevention (DLP) tools: Detect and prevent accidental sharing of sensitive data.

 

 

Tips for successful implementation 🚀

  • Start small: Start with a limited pilot to test the process.
  • Monitor and improve: Provide regular audits to see if policies are effective.
  • Engage your team: Make it accessible and user-friendly so that employees really use the classification matrix.

 

 

Conclusion: Manage sensitive data with confidence! ✅

A well-designed classification matrix helps your organization stay compliant, reduce risk and optimally secure data.

ALTA-ICT is ready to support you in designing and implementing a matrix that complies with all regulations, such as AVG/GDPR¹ and NIS2².

💬 Want to know more? Get in touch and start protecting your data today! 💡

 

 

References

¹https://autoriteitpersoonsgegevens.nl/themas/basis-avg/avg-algemeen/de-avg-in-het-kort

²https://www.ncsc.nl/over-ncsc/wettelijke-taak/wat-gaat-de-nis2-richtlijn-betekenen-voor-uw-organisatie

³https://www.microsoft.com/security/business/microsoft-purview

⁴https://learn.microsoft.com/azure/information-protection/what-is-information-protection

 

 

About the author

My name is Alta Martes, a specialist in Microsoft 365 and Google Workspace, with a focus on modern workplace management, cloud security and identity & access management. With years of experience, I help organizations optimize their IT infrastructure and create a secure, efficient digital workplace.

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Digitale classificatiematrix met BIV-niveaus beschikbaarheid, integriteit en vertrouwelijkheid, met beveiligingssymbolen.