Microsoft Teams: Private channels increased limits and transition to group compliance

🚨 The Signal: Teams private channels now align with M365 Group compliance, applying team-level policies and increasing limits. This simplifies policy management and expands private channel utility, but requires review of existing compliance configurations.

The Impact

Security and Compliance teams are affected by changes to data governance and eDiscovery for private channels, requiring policy validation.

• Security Teams: Risk of misconfigured data retention if policies aren't reviewed.
• Compliance Teams: Risk of eDiscovery gaps if private channel data isn't properly indexed.
• IT Admins: Potential for increased data sprawl due to higher private channel limits.
• Legal Teams: Changes to how private channel communications are discoverable.

The Action

1. Review existing Microsoft Purview Data Loss Prevention (DLP) policies for Teams to ensure they correctly apply to private channels.
2. Validate Microsoft Purview eDiscovery holds and search scopes to include the new private channel compliance model.
3. Assess Microsoft Purview retention policies for Teams to confirm appropriate data lifecycle management for private channels.
4. Communicate changes to legal and compliance stakeholders regarding private channel data discoverability and retention.

Domain: Purview · Impact: medium · Workload: Microsoft Purview