Quote:
Originally Posted by jocampo
Really difficult to tell, almost impossible.
You can put watermarks as a comment on the JPG image or even on the CSS classes, or as part of the HTML tags, inside the name of the directories and files, direct alteration of the zip file, etc.
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And if it's part of what you plan to distribute, it can be compared to a decrypted file/folder/whatever from another purchaser, and
there will be differences.
If the two are identical, there cannot be any personally identifiable information in there.