Microsoft Purview: Data Loss Prevention - Count of Labelled Documents Condition Beta
Data as of 1 hour ago (26 October 2026)
Description
This release introduces a new condition for Exchange Online policies: “Count of labeled documents is greater than.” This condition evaluates the number of attachments in an email message that carry a matching sensitivity label. When the count exceeds a defined threshold, the DLP rule is triggered, and configured actions are applied. This capability enables detection of high-volume data exfiltration scenarios, where multiple sensitive files—individually low-risk—collectively represent a significant compliance or security risk. Existing conditions evaluate file content, but do not provide controls based on the volume of labeled attachments.
Change history
Added to the roadmap 15 May 2026. Tracked here since 1 September 2026. Earliest target we recorded: December 2026 (since tracked — Microsoft may have moved it before we started watching).
Nothing has changed on this item since tracking began on 1 September 2026. Changes appear here as Microsoft updates the feed.