Question: What methods are used for digital watermarking? Using a hex editor to alter the image data Nothing; this is what you'd expect to see. Implanted

What methods are used for digital watermarking?
Using a hex editor to alter the image data
Nothing; this is what you'd expect to see.
Implanted subroutines that link to a central Web server automatically when the watermarked file is accessed
Invisible modification of the LSBs in the file

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