All work

Policy 18Internal governanceEnterprise IT

Microsoft Teams retention and governance investigation

Policy path. Signal: Retention requirement for group chats. Decision: Graph API audit with pagination and throttling handling. Controls: Action 1,315 chats and 21,900 messages inventoried; Action 21,879 messages older than 30 days found; Action Purview retention options validated. Outcome: Retention-policy planning supported.

If The challenge

A group-chat message inventory and age-based analysis were required to evaluate Teams retention requirements.

Then The solution

Built an audit workflow with Graph API pagination and throttling handling, chat inventory, message-age analysis and an investigation of Purview retention capabilities.

Result Outcomes

1,315 group chats audited

  • Audited 1,315 unique group chats
  • Read 21,900 messages
  • Identified 21,879 messages older than 30 days
  • Supported retention-policy planning and technical validation

Related evidence

All work

Policy 04Financial services

Identity governance and audit logging

If
Legacy authentication, inconsistent MFA, permanent administrative privileges and insufficient audit visibility limited…
Then
Implemented staged identity security improvements, role-based Conditional Access, stronger MFA, a role structure ready…
Result
Reduced legacy authentication exposure
  • Microsoft Entra ID
  • Conditional Access
  • MFA
  • Privileged Identity Management

Policy 05Financial advisory & asset management

OAuth application and cross-tenant access governance

If
Third-party integrations, external application permissions, partner access boundaries and audit visibility required…
Then
Reviewed application integrations, established administrative consent governance, removed unauthorised or dormant…
Result
Brought application consent under administrative governance
  • Microsoft Entra ID
  • OAuth consent governance
  • Cross-tenant access
  • Audit logging

Policy 06Healthcare RCM (in-house)

ISO 27001:2022 certification renewal

Renewed ISO 27001:2022 certification

If
Security control remediation, evidence collection and compliance coordination were required to support certification…
Then
Drove security remediation, strengthened information security controls, and coordinated audit evidence and compliance…
Result
Coordinated audit evidence and compliance activities
  • ISO 27001:2022
  • Information security governance
  • Security remediation
  • Audit evidence

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