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Cake day: 16. Juli 2023

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  • sus@programming.devtoScience Memes@mander.xyzElsevier
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    vor 15 Tagen

    I wonder if it’s common for those steganography techniques to have some mechanism for defeating the fairly simple strategy of getting 2 copies of the file from different sources, and looking at the differences between them to expose all the watermarks.

    (I’d think you would need sections of watermark that are the same for any 2 or n combinations of copies of the data, which may be pretty easy to do in many cases, though the difference makes detecting the general watermarking strategy massively easier for the un-watermarkers)












  • sus@programming.devtoScience Memes@mander.xyzAnother day another dollar
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    vor 2 Monaten

    a shadow is just a silhouette cast on a surface, so it can move much faster than light. An object moving near the speed of light in front of a small light source that casts a shadow on a very large, very distant object could appear to move billions of times faster than light (though you would need an extremely bright light source for the shadow to be noticeable to the naked eye)

    there’s really no upper limit, just how far you’re willing to stretch the definition of “shadow” and “movement”