Malicious actors are abusing the secondary market for IPv4 addresses, according to Lancaster University lecturer Vasileios Giotsas, University College London research and teaching assistant and postdoctoral fellow Ioana Livadariu from Norway's Simula Metropolitan Center for Digital Engineering.
In a recent paper titled A first look at the misuse and abuse of the IPv4 Transfer Market [PDF], the three explain how IP address depletion saw regional internet registries establish transfer markets for the increasingly-hard-to-find IPv4 addresses.