check before: 2026-02-06
Product:
Purview, Purview Communication Compliance, Purview Data Loss Prevention, Purview Information Protection
Platform:
Online, US Instances, World tenant
Status:
Change type:
Feature update, User impact, Admin impact
Links:
Details:
Summary:
Microsoft Purview has removed relaxed proximity matching in out-of-box sensitive information types, enforcing stricter proximity rules to improve detection accuracy. This change may reduce detections in some scenarios and affects organizations using OOB SITs in data classification or DLP policies. Custom SITs remain configurable.
Details:
[Introduction]
We are updating Microsoft Purview's out-of-box (OOB) sensitive information type (SIT) detection logic to improve accuracy and reduce false positives. As part of this update, the relaxed proximity matching behavior previously used in some OOB SITs will be removed. After this change, all OOB SITs will consistently use stricter proximity rules for more consistent and precise detections.
[When this will happen:]
General Availability (Production, GCC, GCC High, DoD): Available now
Change Category:
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Scope:
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Release Phase:
Created:
2026-02-06
updated:
2026-02-06
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS workload name
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summary for non-techies**
Microsoft Purview has implemented a "stricter proximity matching" approach to improve the accuracy of detecting sensitive information, which may result in fewer false alarms and more precise identification, though organizations relying on broader detection might need to adjust settings or create custom sensitive information types.
Direct effects for Operations**
Reduced Detection Accuracy
The removal of relaxed proximity matching may lead to fewer detections of sensitive information, impacting data classification and DLP policies.
- roles: Data Protection Officer, Compliance Manager
- references: https://learn.microsoft.com/purview/sensitive-information-type-learn-about
Increased Risk of Data Breaches
With stricter proximity rules, sensitive information that previously triggered alerts may go undetected, increasing the risk of data breaches.
- roles: IT Security Analyst, Data Protection Officer
- references: https://learn.microsoft.com/purview/sensitive-information-type-learn-about
Need for Policy Review and Customization
Organizations will need to review and potentially customize their DLP and classification policies to adapt to the stricter rules, which may require additional resources and time.
- roles: IT Administrator, Compliance Manager
- references: https://learn.microsoft.com/purview/sensitive-information-type-learn-about
Configutation Options**
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Opportunities**
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Potentional Risks**
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Data Protection**
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IT Security**
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Hypothetical Work Council Statement**
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DPIA Draft**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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Last updated 1 month ago ago
