Ann Z. Caracristi

Ann Zeilinger Caracristi (February 1, 1921 – January 10, 2016) was an American cryptanalyst and Deputy Director of the National Security Agency, where she served at various positions over a 40-year career. She served as a member of the Secretary of Defense Joint Security Commission and President's Foreign Intelligence Advisory Board. She became the first woman at NSA to be promoted to GS-18 rank, in 1975, when she became the Chief of Research and Operations.

Biography She was born in Bronxville, New York. She attended Russell Sage College, a women’s college in Troy, New York, and graduated in 1942, with degrees in English and History. After graduation, she was recruited by the Army Signal Intelligence Service to work as a code breaker, at the recommendation of the Dean of Russell Sage. She worked on IBM machines, starting with sorting paper, but quickly rose through the ranks. Caracristi was sent to Washington, D.C., she attended the cryptanalysis courses of William Friedman where puzzles were used to train cryptographers in the art of pattern recognition.

During World War II, Caracristi's cryptography work was focused on deciphering the additive systems used by Japanese military forces and merchant fleet. She was known for her exceptional talent at reconstructing enemy code books. She and her colleagues were among the first Americans to learn of Japan's planned surrender, having deciphered the code on August 14, 1945.

Following the war, Caracristi was hired at an agency that would later become part of the National Security Agency. She was promoted first to supergrade, a higher civil service paygrade, in 1959, and then to GS-18 (the highest supergrade) as the Chief of Research and Operations in 1975. As Deputy Director, she was credited with providing leadership for new generations of code breakers and integrating the use computers and technology.

She retired in 1982, but continued to serve on panels for the Intelligence Community, including President Clinton’s Foreign Intelligence Advisory Board (appointed 1993). In 2003, Caracristi was given an honorary degree by the National Intelligence University, where an academic award in her name is given to a high-performing graduate student each year. Ann was predeceased by her longtime partner Gertrude Elizabeth Kirtland, a crypto analyst and author.

In 2002, her name was given to a Naval Intelligence Professionals' award. Caracristi died January 10, 2016, in Washington at the age of 94. She had dementia in her later years.

Awards and other recognition In 1980, she received the Department of Defense Distinguished Civilian Service Award.

She is one of the subjects of the 2017 non-fiction book Code Girls: The Untold Story of the American Women Code Breakers of World War II by Liza Mundy.