One must be careful with it. IIRC, Anna Chapman was a pro among Russian spies, but at one point she got so confused by the steganography software on her laptop that she asked another known spy for help in using it ... before she realized she was talking to a CIA agent trying to figure her out.
https://www.schneier.com/cgi-bin/mt/mt-search.cgi?tag=stegan...
One must be careful with it. IIRC, Anna Chapman was a pro among Russian spies, but at one point she got so confused by the steganography software on her laptop that she asked another known spy for help in using it ... before she realized she was talking to a CIA agent trying to figure her out.
http://en.wikipedia.org/wiki/Anna_Chapman
http://news.cnet.com/8301-13578_3-20009101-38.html
Bruce Schneier's articles -- and his readers' comments -- provide fascinating details and analysis of these topics.
https://www.schneier.com/blog/archives/2010/07/cryptography_...
https://www.schneier.com/blog/archives/2013/07/protecting_e-...
al Qaeda is known to have used steganography within porn videos.
http://arstechnica.com/business/2012/05/steganography-how-al...