Ensure external file sharing in Teams is enabled for only approved cloud storage services
Why This Matters
When external file sharing in Microsoft Teams is enabled for unapproved third-party cloud storage services, it increases the risk of data exfiltration and introduces non-compliant storage providers into your environment. IT administrators must control which cloud services are accessible from Teams to prevent sensitive data from being stored outside authorized locations. Without this control, users may inadvertently share confidential information through providers that do not meet your organization's security and compliance requirements.
What Aether365 Checks
This security check verifies that file sharing in Microsoft Teams is restricted to only approved cloud storage services, with all unauthorized providers set to Off. In the Aether365 dashboard, this check appears under the microsoft-365 checks section and is flagged as a Medium severity finding when non-approved providers remain enabled.