Configuring the DLP Watermark

Watermarking works by introducing custom XML files that contain the watermarking data. Only documents in these Office Open XML formats can be watermarked:

  • DOCX

  • PPTX

  • XLSX

Important - Older formats supported in Office 2007 and above for backward compatibility (such as DOC, PPT, and XLS, cannot be watermarked). Changing the file extension from doc to docx will not make the document eligible for watermarking.

If the Data TypeClosed Classification of data in a Check Point Security Policy for the Content Awareness Software Blade. scanned for by the DLP Gateway occurs in the body of the email and not the document, the document will not be watermarked. For example if you are scanning for credit card numbers. If the credit card number shows in the body of an email with a document attached, the document will not be watermarked. The Data Type has to occur in the document.