ANALYSIS OF IMAGE STEGANALYSIS TECHNIQUES TO DEFEND AGAINST STATISTICAL ATTACKS V A SURVEY

Steganography is the art concealing information to transmit it in such a way that nobody but the intended receiver knows the existence of the message. Steganalysis techniques work on eliminating suspicion about the existence of a message. If suspicion is raised, then the message cannot be passed covertly. One of the ways to detect the hidden message is to view the statistical properties of the image or medium in which the message is hidden. This is called a statistical attack. In this paper, we explain the nature of such attacks and present our conclusions based on reviews of existing methods of defense against statistical attacks.