The natural manufacturing defects in all image sensors uniquely identify normal media. Post once to a friend over mms or a social media service... and your ninja life is burned.
These kids and their foreign contractor run VPN services are naive about depth-charge Steganography. Privacy has been dead for years. =3
When I search for "depth-charge Steganography" I find... this thread and nothing else. So I think most people are ignorant of it. Is there a typo? Or is it so secret that the web hasn't heard of it? If the latter, then I think you just blew its cover.