How to hide a Secret message inside a photo (Demo) | Steganography

In 1499, Johannes Trithemius used the term for the first time in his Steganographia, a book on magic disguised as a dissertation on steganography and cryptography. Typically, the secret messages are disguised as (or integrated into) something else, such as visuals, Steganography has the advantage over cryptography alone in that the secret message is not drawn to itself as a target of investigation. Plainly visible encrypted messages, regardless of how impenetrable they are, attract attention and may even be incriminating in nations where encryption is prohibited. Steganography is concerned with hiding the fact that a secret message is being conveyed together with its contents, as opposed to cryptography, which is the technique of only protecting the contents of a message.