The Mariposa botnet, discovered December 2008,[1] is a botnet mainly involved in cyberscamming and denial-of-service attacks.[2][3] Before the botnet itself was dismantled on 23 December 2009, it consisted of up to 12 million unique IP addresses or up to 1 million individual zombie computers infected with the "Butterfly (mariposa in Spanish) Bot", making it one of the largest known botnets.[3][4][5]