Microsoft Purview DLP: Unmanaged cloud app protection with Microsoft Purview and the Island Enterprise Browser

Microsoft Purview integrates with the Island Enterprise Browser to extend data loss prevention and network data security to unmanaged cloud app workflows. Administrators must enable this feature to inspect and protect browser-based data sharing using existing Purview policies. Rollout begins late March 2026 (preview) and late June 2026 (general availability). Microsoft Purview network data security now integrates with Island, extending protection to Island’s browser-based workflows at the point of user interaction. With this integration, new and existing Island customers can configure Microsoft Purview collection and data loss prevention policies to detect and protect data shared with unmanaged cloud apps through the Island Enterprise Browser, the Island Extension, and browser add ins via HTTP and HTTPS, using the same classifiers, sensitive information types, and sensitivity labels used in other Purview policies. Island provides visibility and control at the presentation layer, including typed and pasted input, file transfers, and extension activity, so data can be inspected before it ever leaves the browser. This integration further enriches Purview Data Security Posture Management (DSPM), Insider Risk Management (IRM) risk score, enables data security and compliance for AI interactions, and more.  This message is associated with Microsoft 365 Roadmap ID 558437. When this will happen: Public Preview: Rollout will begin in late March 2026 and is expected to complete by late April 2026. General Availability (Worldwide): Rollout will begin in late June 2026 and is expected to complete by late July 2026. How this affects your organization: Who is affected: Organizations using Microsoft Purview Customers using or planning to use the Island Enterprise Browser, Island Extension, or supported browser add-ins. Microsoft 365 administrators managing Purview collection and DLP policies. What will happen: The Island integration will automatically appear in the Purview DLP Security Store as the feature rolls out. The integration is not enabled by default. Administrators must explicitly enable it before it can be used in policies. Once enabled, admins can use existing or new Purview collection and DLP policies to inspect and protect data shared through Island-managed browser activity. There is no impact to end users unless administrators enable the integration and configure network data security […]

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