Features of using Invisible Signs in the Word Environment for Hiding Data

Considered digital steganography is the direction of classical steganography based on concealing or introducing additional information into digital objects, while causing some distortions of these objects. At the same time, images, audio, video, network packets, etc. can be used as objects or containers. Recently, there has been a lot of publication in the field of information hiding in a text container. To embed a secret, steganographic methods rely on redundant information about the used covering media or properties that the human perception system cannot distinguish. Since text documents are widely used in organizations, using a text document as a storage medium may be the preferred choice in such an environment. On the other hand, the choice of using a text document as a storage medium is the most difficult, since it contains less redundant information. In this article, we present textual steganography using invisible characters in a word processor.