Steganography Forensic: Metadata Analysis for Steganography Detection

Steganography is an art to hide secret message inside a carrier file which is commonly image file in the form of JPG or BMP. After created, the carrier file is then sent to other members of a certain group for secure communication. Only the group members identify the carrier file and understand the message embedded. Each steganography tools has their own method to perform the hiding process in which the tools are different one another. For digital forensic analyst, steganography is a challenge to detect it. The carrier file still looks good and nothing is suspicious visually on it. This book explains how to perform Metadata Analysis to detect the existence of a steganography carrier file. Moreover, with Metadata Analysis, digital forensic analyst could identify the type of steganography tools used to embed the secret message into the image file. At this moment, this steganography technique is frequently used by many intelligent agencies as their telecommunication channel which is secured from detection and interception of third parties. Even the third parties do not have an idea about to recognize it.