Joel Greenberg's current areas of research include:

The impact of technologies developed within the signals intelligence community during World War Two on the information age.


The life and career of Brigadier John Tiltman.  Tiltman, Chief Cryptographer at WW2 Bletchley Park, could lay claim to being one of the greatest cryptanlaysts of his generation.


The life and career of William Friedman.  Friedman, the doyen of American cryptography, founded the US Army's Signals Intelligence Service.

Jewish Gangsters in America. [Greenberg, JM, He was good to his mother - The rise and fall of the Jewish Gangster in America, December 2016].

Image: An example of a Room 40 decrypt of a German Naval signal during World War One.