New steganalysis technique for the digital media forensics examiner

Abstract

Steganographic fingerprints are convened with the individuality of the steganographic methods. The basic goals of this article are: 1. To evaluate sequential and randomly embedded steganographic evidence within digital images. 2. To identify the “steganographic fingerprint” of spatial domain based steganographic methods. Steganographic fingerprinting is the next step towards forensic analysis, reachable only if one may localize steganographic content within an image. The presented detection method works equally well for sequential and random embedding. We will show that the new method may improve the message length estimation, detection accuracy and give an indication of the embedding method. In addition we will show the false alarm rate of 0.9 for the proposed method, while the false alarm rate for the commonly used technique RS Steganalysis is 2.4.