Thomas Jakobsen is a mathematician, cryptographer, and computer programmer, formerly anassistant professor at the Technical University of Denmark (DTU) and head of research anddevelopment at IO Interactive. His notable work includes designing the physics engine and 3-D pathfinder algorithms for Hitman: Codename 47, and the cryptanalysis of a number of block ciphers. Jakobsen earned an M.Sc. in engineering and Ph.D. in mathematics, both from DTU.