We analyze a corruption model where a principal seeks to control an agent’s corruption by supplementing a costless noncollusive outside detector such as the media with a collusive internal supervisor. The principal’s objective is to minimize the overall costs, made up of enforcement costs...

Two bookmakers compete in Bertrand fashion while setting odds on the outcomes of a sporting contest where an influential punter (or betting syndicate) may bribe some player(s) to fix the contest. Zero profit and bribe prevention may not always hold together. When the influential punter is quite...