A Novel Text Steganography System Using Font Color of the Invisible Characters in Microsoft Word Documents

Steganography can be defined as a method of hiding data within a cover media so that other individuals fail to realize their existence. Image, audio and video are some popular media for steganography. But text is ideal for steganography due to its ubiquity and smaller size compared to these media. However, text communication channels do not necessarily provide sufficient redundancy for covert communication. In this paper, a new approach for steganography in Microsoft Word documents is proposed. The main idea is that setting any foreground color for invisible characters such as the space or the carriage return is not reflected or viewed in the document.