Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity. The word steganography is of Greek origin and means “concealed writing” from the Greek words steganos meaning “covered or protected”, and graphei meaning “writing”. The advantage of steganography, over cryptography alone, is that messages do not attract attention to themselves. Plainly visible encrypted messages—no matter how unbreakable—will arouse suspicion, and may in themselves be incriminating in countries where encryption is illegal. Therefore, whereas cryptography protects the contents of a message, steganography can be said to protect both messages and communicating parties. – The above extract is verbatim from Wikipedia.
Steganography allows you to hide files in plain sight, be it text or pictures. This is perfect for transferring files without anyone even getting an inkling about it’s real content. Using a software called StegoMagic, you can hide a 1 GB file in a 1 MB picture with only the size discrepancy being visible! It comes in 2 variants, one that allows text to be hidden in any other file like audio, video etc. The other hides binary files in another binary file.
You can download it from here
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