This publication presents a historical perspective for informational and educational purposes, is the result of independent research, and does not necessarily reflect a position of NSA/CSS or any other US government entity. This publication is distributed free by the National Security Agency. If you would like additional copies, please email
[email protected] or write to: Center for Cryptologic History National Security Agency 9800 Savage Road, Suite 6886 Fort George G. Meade, MD 20755 Carol B. Davis worked at NSA for thirty-three years as an analyst, linguist, and manager. She obtained a BA degree from New College of Florida and an MA from Indiana University. At the time of her retirement, in 2006, she entered the Learning Enhancement Initiative program, which allowed her to pursue research on Russian plaintext at the Center for Cryptologic History. United States Cryptologic History Candle in the Dark: COMINT and Soviet Industrial Secrets,1946-1956 Carol B. Davis National Security Agency Center for Cryptologic History 2017 “Soviet Union, East and South Asia,” 1987 (detail; Perry Castañeda Library, University of Texas at Austin) Contents Introduction ........................................................................................5 Chapter 1: Definitions, Collection, and Processing ........................................9 A Target of Opportunity .............................................................................. 9 What Plaintext Included ............................................................................. 9 Problems