File:Genevieve Grotjan Feinstein.jpg

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Genevieve Grotjan Feinstein

Genevieve Feinstein hoped to become a math teacher. However, after taking the tests to become a professional government mathematician, she was offered a job with the Signal Intelligence Service (SIS). In 1939, Mrs. Feinstein was a cryptanalyst involved in the decryption and reading of Japanese diplomatic messages. In September 1940, she made a discovery that changed the course of history. Her successful breakthrough enabled the SIS to build an analog machine to decrypt the Japanese diplomatic messages, known as "Purple", throughout World War II.

Mrs. Feinstein followed her success with work on other Japanese cipher systems and as a pioneer in the cryptanalytic research section working on a variety of machine cipher systems. Following the war, she was assigned to the Soviet problem working on the Venona Project.
Date circa 1939
date QS:P,+1939-00-00T00:00:00Z/9,P1480,Q5727902
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This image was copied from wikipedia:en. Original source: http://www.nsa.gov/women/women00017.cfm

Valid link as of 2020-4-5: https://www.nsa.gov/About-Us/Current-Leadership/Article-View/Article/1621585/genevieve-grotjan-feinstein/
Author U.S. Army

Description there:

Genevieve Grotjan Feinstein

Genevieve Feinstein hoped to become a math teacher. However, after taking the tests to become a professional government mathematician, she was offered a job with the Signal Intelligence Service (SIS). In 1939, Mrs. Feinstein was a cryptanalyst involved in the decryption and reading of Japanese diplomatic messages. In September 1940, she made a discovery that changed the course of history. Her successful breakthrough enabled the SIS to build an analog machine to decrypt the Japanese diplomatic messages, known as "Purple", throughout World War II.

Mrs. Feinstein followed her success with work on other Japanese cipher systems and as a pioneer in the cryptanalytic research section working on a variety of machine cipher systems. Following the war, she was assigned to the Soviet problem working on the Venona Project.

Licensing[edit]

Public domain
This article or image contains materials that originally came from a National Security Agency (NSA) website or publication. It is believed that this information is not classified, and is in the public domain in the United States. See the privacy and security information.


Original upload log[edit]

date/time username resolution size edit summary
20:44, 18 December 2006 w:en:User:RashBold 173×213 7 KB http://www.nsa.gov/women/women00017.cfm

Image description page history[edit]

link date/time username edit summary
http://en.wikipedia.org/w/index.php?title=Image:Ggrotjan.jpg&redirect=no&oldid=95161895 10:39, 11 September 2007 w:en:User:Dmcdevit
http://en.wikipedia.org/w/index.php?title=Image:Ggrotjan.jpg&redirect=no&oldid=95161895 20:44, 18 December 2006 w:en:User:RashBold
http://en.wikipedia.org/w/index.php?title=Image:Ggrotjan.jpg&redirect=no&oldid=95161787 20:44, 18 December 2006 w:en:User:RashBold (http://www.nsa.gov/women/women00017.cfm)

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Date/TimeThumbnailDimensionsUserComment
current01:19, 16 November 2016Thumbnail for version as of 01:19, 16 November 2016173 × 213 (12 KB)Quibik (talk | contribs)Reverted to version as of 03:16, 15 November 2016 (UTC)
01:18, 16 November 2016Thumbnail for version as of 01:18, 16 November 2016277 × 341 (23 KB)Quibik (talk | contribs)denoise and scale up
03:16, 15 November 2016Thumbnail for version as of 03:16, 15 November 2016173 × 213 (12 KB)Quibik (talk | contribs)remove moire
16:29, 13 September 2007Thumbnail for version as of 16:29, 13 September 2007173 × 213 (7 KB)BetacommandBot (talk | contribs)Transwiki approved by: w:en:User:Dmcdevit This image was copied from wikipedia:en. The original description was: == Summary == http://www.nsa.gov/women/women00017.cfm == Licensing == {{PD-USGov-NSA}} === File history === {| class=wikitable ! date/t

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