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Steganography, derived from the Greek, literally means, "Covered writing". It is the science of hiding information in ways that prevent the detection of hidden messages. Digital technology gives us new ways to apply steganographic techniques, including one of the most trickery that of hiding information in multimedia likes image, audio and video. It includes a huge array of secret communications methods that conceal the message's very existence. These methods include invisible inks, microdots,doi:10.21608/asc.2013.158158 fatcat:qciwsghsmfajzkz3kqaubhdspy