Microsoft Teams: Expanded Markdown support in Microsoft Teams

🚨 The Signal: Microsoft Teams now supports expanded Markdown in messages. This change enhances message formatting options, potentially improving clarity but also increasing the complexity of content that security tools must parse for policy violations or sensitive data.

The Impact

Security teams face a moderate risk due to increased complexity in content scanning for sensitive data and policy violations.

• Security Teams: Risk of DLP bypasses due to new formatting.
• Compliance Officers: Potential for unmonitored sensitive data sharing.
• Data Owners: Increased risk of data exposure if policies aren't updated.

The Action

1. Review existing Microsoft Purview DLP policies for Teams to ensure they account for expanded Markdown syntax.
2. Test DLP policies with messages containing new Markdown elements to verify detection capabilities.
3. Communicate to users about appropriate use of new formatting and remind them of data handling policies.

Domain: Teams · Impact: medium · Workload: Teams