1. JPEG Steganalysis Statistical Offset Tests
The structure and widespread use of the JPEG format provide
an easy channel to secretly communicate information.
Our steganalysis aims to detect the presence and nature
of hidden data in JPEG image files.
Statistical Offset Tests
Spatial Domain Compatibility Tests

2. Statistical Offset Tests
Specially cropping JPEG images can reveal telling information about embeddings through the resulting histograms.

3. Spatial Domain Compatibility Tests
Most steganographic embedding algorithms ignore the fact that their output may not be possible via normal use of the JPEG standard.
(This image contains a text file that reads “hello world”)

4. JPEG Steganography Probabilistic Steganographic embedding
Aims to maximize payload while minimizing detectability
Not detectable using JPEG-compatibility steganalysis
Image above embedded using J2 (data set is a small C program)