About the book: 2018 / Unlike cryptography, which encrypts the contents of a secret message, steganography hides the very fact of its existence. At the same time, it can be combined with cryptology methods, complicating the overall information security system. The book tells the story of the birth and evolution of steganography in the world, the development and sophistication of methods and means of hidden secret writing: invisible ink, camouflage and microdots, and also describes modern digital steganographic technologies and cyber attacks.