Quote:
Originally Posted by NonDuality
Just wondering if ebooks with DRM bought from online stores , like Amazon, have any personally identifiable user account info stored inside them other than the DRM itself, potentially enabling the tracking of the ebook even after the DRM has been removed from it.
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Probably. Likely places are metadata and images.
Personal information in the metadata can be removed even if it is encripted just by deleting any non-esential tags, but information disguised inside an image cannot be identified easily.
The only way to know if any account information is embedded in a book is to buy two copies of the same book, at the same time, using two different accounts, DeDRMing both and making a binary comparison of the resulting files.