NSA Provides Fascinating Documents on the History of SIGINT: the Vietnam War

An excerpt from “Vietnam_A_SIGINT_Paradox_Part_I”
“The North Vietnamese revealed that the first group of cryptographers studied in China as early as 1950-51.  They left in 1950, studied for six months, and returned home in May of 1951.”
See the NSA’s website and search for “History of SIGINT Vietnam War”

 

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