Dundee Society

The Dundee Society was a society of graduates of CA-400, a National Security Agency course in cryptology devised by Lambros D. Callimahos, which included the Zendian Problem (a practical exercise in traffic analysis and cryptanalysis).

The Society was founded in the mid-1950s and continued on after Callimahos' retirement from NSA in 1976.

The last CA-400 class was held at NSA in 1979, formally closing the society's membership rolls.

[2] The society took its name from an empty jar of Dundee Marmalade that Callimahos kept on his desk for use as a pencil caddy.

Callimahos came up with the society's name while trying to schedule a luncheon for former CA-400 students at the Ft. Meade Officers' Club; being unable to use either the course name or the underlying government agency's name for security reasons, he spotted the ceramic Dundee jar and decided to use "The Dundee Society" as the cover name for the luncheon reservation.