Science Memes

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Elsevier (mander.xyz)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 8 points 4 months ago (9 children)

Wouldn't printing the PDF to a new PDF inherently strip the metadata put there by the publisher?

[–] [email protected] 18 points 4 months ago (7 children)

it’s possible using steganographic techniques to embed digital watermarks which would not be stripped by simply printing to pdf.

[–] [email protected] 2 points 4 months ago (2 children)

When is why you steghide random data to the image to fuck up the other end =]

[–] [email protected] 2 points 4 months ago (1 children)

Unless you know specifically what they're adding or changing this wouldn't work. If they have a hidden 'barcode' and you add another hidden 'barcode' or modify the image in a way to remove some or all of theirs, they'd still be able to read theirs.

[–] [email protected] 4 points 4 months ago

yeah, youd have to sample other downloads to collect statistics and unsteghide theirs to effectively ensure your fuzzing worked

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