Detecting and removing predefined sensitive information types from electronic documents

By combining a context-aware filtering layer and a proxy server, efficient, accurate, and flexible data security control of the document hiding tool is achieved, solving the problems of insufficient context awareness and insufficient flexibility of proxy services in existing tools.

CN121079671APending Publication Date: 2025-12-05MICROSOFT TECHNOLOGY LICENSING LLC
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Patent Information

Application Number
CN202480028932.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-05-31
Filing Date
2024-05-20
Publication Date
2025-12-05

AI Technical Summary

Technical Problem

Existing document hiding tools lack context awareness, leading to inappropriate hiding and high computational resource consumption. Furthermore, traditional proxy services lack flexibility and cannot achieve fine-grained data security control.

Method used

It combines a context-aware filtering layer with existing sensitive information detection logic, uses machine learning and rule combinations to detect sensitive information, combines a proxy server to achieve selective concealment, and provides a graphical user interface to assist editing.

Benefits of technology

It improves the efficiency and accuracy of document concealment, reduces the consumption of computing resources, provides more flexible data security controls, and reduces the cost of manpower and computing resources.

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Abstract

Automatic and semi-automatic document masking techniques are disclosed herein. In some example embodiments, "context aware" masking is provided. Automated techniques are used to identify a set of potentially sensitive item (s) within a document. The potentially sensitive item (s) are filtered based on contextual information (such as entity identifiers (such as personnel identifiers, personnel group identifiers identifying a group of multiple persons, organization identifiers, etc.), resulting in a filtered set of hidden candidate (s). The filtered concealment candidate (s) may be concealed from the document, for example, automatically, or output (e.g., via a document editing graphical user interface) as a suggestion in a secondary concealment tool. Other example embodiments account for selective concealment when uploading and / or downloading a document via a proxy server to prevent, for example, intentional or unintentional publication of potentially sensitive information in a web browsing context.
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