Elizebeth Smith Friedman passed away on October 31, 1980, in Plainfield, New Jersey.
Elizebeth Smith Friedman died on October 31, 1980, in Plainfield, New Jersey. Her passing marked the end of a storied career in codebreaking that spanned several decades, including significant contributions to cryptology during Prohibition and World War II. Her legacy continues to influence the field of cryptanalysis today.