I know Calibre can remove DRM, but it seems that Calibre does not remove things like watermarks, references to the buyer by name, etc. Now maybe I can try to find those manually, but that is an error prone process. Plus, what if they embed a unique digital signature that ties back to me? I understand that this is a very uncommon practice, but I do not want to find myself in a bad place.

I suppose the only way to remove a digital signature of any sort is to buy two of the same e-book by different people, diff them, and remove anything that differentiates them.

Is there any tool that does this or automates the process? am I being too paranoid, and this is not a real threat?

  • matcha_addict@lemy.lolOPEnglish
    24·
    4 months ago

    Thanks for your advice. I am a programmer by craft so I can definitely do that. I think the only issue may be books with any important content that is not text, i.e. graphics and images (and unfortunately, many of the books I am interested in have that). If I understood what you said correctly.

        • Lemongrab@lemmy.oneEnglish
          31·
          4 months ago

          Theoretically, yes. Handling of images programmatically could allow for some simple lossy compression which would help.

          • FierySpectre@lemmy.worldEnglish
            7·
            4 months ago

            There are so many ways to encode information into an image without changing its look that I doubt you’ll find most of them by “changing levels”

            • conciselyverbose@sh.itjust.worksEnglish
              3·
              4 months ago

              I’d personally be a lot more likely to blur and add random noise, then use lossy compression if I wanted to mitigate steganography, but even then, they don’t need to encode a lot of information and they have a base image and secrets to compare to. It’s entirely possible for them to have chosen something reasonably robust through random edits like that.