On hiding data into the structure of the FAT family file system

Methods of technical steganography, namely, those ones based on hiding information messages into the structure of the FAT family file system are studied. The basic method based on changing the numbering of individual clusters of covering files is considered, its advantages and disadvantages are investigated. An improved method is proposed that makes it possible to increase significantly the amount of hidden data. The results of the comparative analysis of the methods of hiding data into the structure of the FAT family file system are given.