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good morning Iamp;#39;m John Ortiz Iamp;#39;m here to talk about advanced steganography advanced JPEG steganography and detection okay all right so one of these two images has about 69,000 bytes hidden in it out of a file size of about 330,000 bytes which is about 20% of the file so we can take a closer look going dim the lights a little bit for this one so this is the picture on the left hereamp;#39;s a picture on the right left right looking at it closely um especially like if you look above the eye you might be able to see slight differences but thereamp;#39;s no way you can tell that one of them has hidden data the other one does not and thatamp;#39;s the hidden data just just an image you can actually hide anything inside of a JPEG whatever you want to hide so hereamp;#39;s what weamp;#39;ll talk about today weamp;#39;ll overview the jpeg algorithm uh then how to exploit it for hiding I think Iamp;#39;ve got about 10 different techniques to uh talk about and then how to d
