What did Pistono and Yampolskiy find? Their list of groups that could make a vicious A.I. starts familiar: military (developing cyber-weapons and robot soldiers to achieve dominance), governments (attempting to use AI to establish hegemony, control people, or take down other governments), corporations (trying to achieve monopoly, destroying the competition through illegal means); and continues to include black hat hackers, villains, doomsday cults, and criminals, among others. And the A.I. could come from many places. According to the authors, code written without oversight, or closed-source programming designed to be seen by as few eyes as possible, are both ways to make a harmful artificial intelligence without warning the world first.