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This Custom-Made Jihadi Encryption App Hides Messages in Images
[Motherboard.vice] A new program dubbed Muslim Crypt tries to keep extremist communications secure.
There was a spate of articles on hiding messages in jpegs shortly after 9-11-2001. I don't think any messages were ever actually found.
Posted by: Skidmark 2018-02-02
http://www.rantburg.com/poparticle.php?ID=507115