Survey on steganography methods (text, image, audio, video, protocol and network steganography)

The growth of sharing information on the internet has arises the problem of security of digital data over the network. Steganography is a technique which protects the fact of concealment of message within a cover media i.e. it makes the secret message invisible for any unintended recipient. If anyone notices the secret information within the cover file then steganography is failed. Here we are discussing various types of steganography methods.