Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

54577 readers

692 users here now

⚓ Dedicated to the discussion of digital piracy, including ethical problems and legal advancements.

Rules • Full Version

1. Posts must be related to the discussion of digital piracy

2. Don't request invites, trade, sell, or self-promote

3. Don't request or link to specific pirated titles, including DMs

4. Don't submit low-quality posts, be entitled, or harass others

Loot, Pillage, & Plunder

📜 c/Piracy Wiki (Community Edition):

💰 Please help cover server costs.


Ko-fi	Liberapay

founded 1 year ago

MODERATORS

[email protected]

212

How can I upload books (to libgen, et al) without a trace back to me? (lemy.lol)

submitted 8 months ago by [email protected] to c/[email protected]

25 comments fedilink hide all child comments

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?

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 12 points 8 months ago (1 children)

Pymupdf has options to handle images. Good package.

[–] [email protected] 9 points 8 months ago (2 children)

But then those images could contain the very fingerprints he's trying to avoid

[–] [email protected] 2 points 8 months ago (1 children)

You can mess with the levels to see any hidden watermarks

[–] [email protected] 8 points 8 months ago (2 children)

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"

[–] [email protected] 3 points 8 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.

[–] [email protected] 3 points 8 months ago

But what transformations are they stable to?

[–] [email protected] 2 points 8 months ago

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