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Microsoft 365 Modern Workplace: Security and Compliance

Microsoft 365 Modern Workplace: How IT Systèmes Helped an Organization Implement a Zero Trust Strategy and Protect Its Sensitive Data.

Why strengthen security and compliance in the Modern Workplace?

In an increasingly exposed digital environment, organizations must protect their identities, data and access while remaining compliant with regulatory requirements (RGPD, audit, retention).
The Modern Workplace imposes a Zero Trust approach and relies on protection and compliance tools such as Microsoft Defender, conditional access and Microsoft Purview for data governance and protection.

Customer challenge: improve Microsoft 365 security and reduce the risk of data leakage.

The customer was facing :

  • Complex access and permissions management
  • Lack of visibility over sensitive data
  • Growing risk of data leakage or inadvertent exposure
  • Greater need for compliance and auditing

It wanted to structure and modernize its security environment, while making it easier for its internal teams to manage.

Our approach: implement a modern, governed Zero Trust architecture

Analysis & diagnostics: audit of identities, access and sensitive data

We have carried out a complete analysis of safety practices:

  • Identity analysis, authentication and MFA
  • Review of access, rights and external shares
  • Status of security, compliance and data protection policies
  • Identification of risks and areas to be reinforced

Designing a modern security architecture: Zero Trust & Microsoft Purview

We have designed a strategy based on the Zero Trust principles:

  • Enhanced authentication (MFA, conditional access)
  • Data protection policies via Microsoft Purview (DLP, classifications, sensitivity labels)
  • Encryption and segmentation according to data criticality
  • Continuous monitoring of sensitive activities

Microsoft Purview has been integrated as the governance foundation for :

  • Automatic classification of sensitive data
  • Protection against internal risks
  • DLP policies
  • eDiscovery and advanced auditing
  • Document lifecycle management

Implementation & security: deployment of protection, policies and controls

We have designed a strategy based on the Zero Trust principles:

  • Enhanced authentication (MFA, conditional access)
  • Data protection policies via Microsoft Purview (DLP, classifications, sensitivity labels)
  • Encryption and segmentation according to data criticality
  • Continuous monitoring of sensitive activities

Microsoft Purview has been integrated as the governance foundation for :

  • Automatic classification of sensitive data
  • Protection against internal risks
  • DLP policies
  • eDiscovery and advanced auditing
  • Document lifecycle management

Support & skills development: adoption of Microsoft security tools

  • Training IT teams in Microsoft and Purview security tools
  • Customized documentation and fine-tuning according to user behavior and feedback

Results: a strengthened security posture and controlled compliance

  • Overall strengthening of the security posture
  • Purview provides a clear, centralized view of sensitive data
  • Significant reduction in the risk of leakage or accidental exposure
  • Compliance with regulatory and internal requirements
  • A more homogeneous, sustainable and easy-to-manage environment

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