What is Steganography?
Hiding a secret message within an ordinary message and extracting it at the destination to maintain confidentiality of the data.
Example: Popular method is hiding a file inside an image or using image file as a cover.
Uses physical and chemical means to hide the existence of a message.Example – Invisible ink, Microdots, In Computers (Uses redundant information in pictures, text, sound etc)
Uses written natural language to hide the message in the carrier in some non-obvious ways.