Tag loss occurs when modifying a tagged Microsoft Excel file

技術的な記事 ID: KB85651
最終更新: 12/22/2021

環境

McAfee Data Loss Prevention (DLP) Endpoint - all supported versions

For supported environments, see KB68147 - Supported platforms for Data Loss Prevention Endpoint.

問題

Tag loss occurs when you modify tagged documents based on the amount of data modified. This issue conspicuously occurs with Microsoft Excel file formats.

原因

When DLP Endpoint tags a file, it actually tags the content of the file with a generated signature. If the file content is modified, and the tagged content is fewer than 350 characters, the file is untagged. 350 characters can be handwritten.

For an Excel file format, this cause might not be the case, because if you remove a column in an Excel table structure, the signature breaks. This reason is why the file is untagged, even though there are more than 350 characters.

解決策

This behavior is expected. When a tagged file content is modified, tag loss occurs. The loss can be more likely to occur with Excel format files because of its file format structure.

影響を受ける製品

Data Loss Prevention Endpoint 11.6.x
Data Loss Prevention Endpoint 11.4.x (EOL)
Known Issue/Product Defect

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Tag loss occurs when modifying a tagged Microsoft Excel file

環境

問題

原因

解決策

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言語:

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Knowledge Center

Tag loss occurs when modifying a tagged Microsoft Excel file

環境

問題

原因

解決策

影響を受ける製品

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