NPR Story
11:15 am
Fri May 11, 2012

Disguising Secret Messages, In A Game Of Spy Vs Spy

Originally published on Fri May 11, 2012 11:36 am

Last May, German investigators found secret files embedded in a pornographic video on memory cards being carried by a suspected al Qaeda operative. Peter Wayner describes the history and technology of the technique for hiding information, known as steganography.