Not really trivial to detect steganography. There is whole body of work that focus on statistically undetectable data hiding [1]. Much of it is in confines of r

Not really trivial to detect steganography. There is whole body of work that focus on statistically undetectable data hiding [1]. Much of it is in confines of research labs, but it is still feasible. [1] http://scholar.google.com/scholar?hl=en&q=secure+steganography&btnG=Search&as_sdt=0%2C5&as_ylo=&as_vis=0 http://scholar.google.com/scholar?hl=en&q=secure+stegano...