A Review on Digital Image Steganalysis Techniques Categorised by Features Extracted

The overwhelming growth in communication technology and usage of public domain channels (i.e. Internet) has greatly facilitated transfer of data. However, such open communication channels have greater vulnerability to security threats causing unauthorized information access. Steganography is the art of hiding and transmitting data through apparently innocuous carriers such as text, image, audio or video in an effort to conceal the existence of the secret data and the fact that communication is even taking place. Steganalysis is an attack on steganography. Both steganography and steganalysis have received a great deal of attention from law enforcement and the media. In the past years many powerful and robust methods of steganography and steganalysis have been reported in the literature. In this paper, we classify and give an account of the various approaches that have been proposed for steganalysis. Some promising methods for universal steganalysis with respect to features and classification techniques have also been