Mob Code, The
This series uncovers some of the world's most famous encryptions. Revealing how they were decoded, the brilliant minds who cracked them and the mysterious secrets they were hiding. This episode reveals the story of one of history's greatest codebreakers: suburban mom - Elizebeth Friedman. Against the odds, she cracked the codes which brought down the Mob, saved countless lives in World War Two, and prevented a Nazi invasion of America - armed with just a pencil and paper.
https://en.m.wikipedia.org/wiki/Elizebeth_Smith_Friedman
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