Does the Data Masking Service from Oracle mask Document Attachments in DOR?

Summary:

We are looking at the Data Masking service from Oracle. I know this service scrambles the Documents of Record metadata, which is good. Does this service also remove or delete the actual attachment itself? For examples, if the metadata of a birth certificate is scrambled, someone can still look at the birth certificate to decipher who the person is, and to access PII.

Content (please ensure you mask any confidential information):

This is a common use case, where a number of attachments stored in the Documents of Record DOR area can be full of sensitive information, e.g. Passport, Visa, Drivers License, Birth Certificate.