 In 2013, in response to a Freedom of Information Act request by Dunin, the NSA released documents which show the NSA became involved in attempts to solve the "Kryptos" puzzle in 1992, following a challenge by Bill Studeman, Deputy Director of the CIA.The documents show that by June 1993, a small group of NSA cryptanalysts had succeeded in solving the first three parts of the sculpture.Dunin has given talks on "Kryptos" and the "Cyrillic Projector" at the National Security Agency's NSA Cryptologic History Symposium, Def Con, Shmoocon, Notacon, PhreakNIC, and Dragon*Con, and has also given lectures at the International Game Developers Conference.