1 RS Analysis Detects randomly scattered LSB embedding in grayscale and colour images by inspecting the differences in the number of regular and singular groups for the LSB and ’shifted’ LSB plane.

2 Chi-square attack Statistical analysis of pairs of values (PoV’s) exchanged during LSB embedding.

3 Sample Pair Analysis Based on a finite state machine whose states are selected multisets of sample pairs called trace multisets.

4 Difference histogram analysis Statistical attack on an image’s histogram, measuring the correlation between the least significant and all other bit planes.

5 Primary Sets Based on a statistical identity related to certain sets of pixels in an image.