Notable WW II era women cryptologists Notable women who contributed to the U.S. cryptologic effort during the World War II era include: Virginia Dare Aderholdt – decrypted the Japanese surrender message Ann Z. Caracristi – later became Associate Director of the National Security Agency  Margaret Crosby – worked as a cryptographer for the OSS' Greek Desk Agnes Meyer Driscoll – broke the Japanese M-1 cipher machine Elizebeth Smith Friedman – helped convict rum runners during Prohibition and thwarted Nazi agents in South America in WW II Genevieve Grotjan Feinstein – found the crucial break in the Japanese Purple cipher Helen Nibouar – helped develop the SIGABA cipher machine
Notable WW II era women cryptologists Notable women who contributed to the U.S. cryptologic effort during the World War II era include: Virginia Dare Aderholdt – decrypted the Japanese surrender message Ann Z. Caracristi – later became Deputy Director of the National Security Agency , its highest civilian leadership position Margaret Crosby – worked as a cryptographer for the OSS' Greek Desk Agnes Meyer Driscoll – broke the Japanese M-1 cipher machine Elizebeth Smith Friedman – helped convict rum runners during Prohibition and thwarted Nazi agents in South America in WW II Genevieve Grotjan Feinstein – found the crucial break in the Japanese Purple cipher Helen Nibouar – helped develop the SIGABA cipher machine
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, its highest civilian leadership position