Thufir Hawat (10075 AG - 10193 AG) was a Mentat and Master of Assassins for House Atreides during the time of Duke Leto the Just. For three generations, Hawat had been responsible for Atreides House security. This meant protection for Atreides family members, anti-espionage, risk management, and various aspects of kanly. Moreover, Hawat had been entrusted with the training of the Ducal Heir Paul in the arts of war, as well as political and military strategy.