Steganography is the art of hiding data within other data. Ann sends a message to Bob. With encryption Eve could see the message but not read it. With steganography Eve would not see the message.

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What tools are needed to view or detect covert messages in a 60 fps video?

The eye can't detect changes in a frame greater than 60 FPS. Similar to this scene in Fight Club, a QR code equivalent is used in pairing the Apple Watch with the iPhone Without knowing that the ...
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PGP 'forced entry' decode (steganography?)

This was originally posted by me on stackoverflow but was deemed too generic. It does seem like an impossible thing to do, but: you know when you have your perimeter alarm system you usually get ...
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JPEG file SOS marker before SOF

I'm looking over some JPEG files with an assumption that a steganography has been used for trial obfuscation due to the installation of JPHS. I've come across a file where the start of scan marker ...