1. A computing device, comprising: at least one processor; and memory storing instructions configured to instruct the at least one processor to: receive, in the computing device, a request to register an account for an entity; obtain, by the computing device via a network connection, data identifying a plurality of connections between an entity and a plurality of respective third parties; identify, by the computing device, at least a subset of the connections, wherein each third party in the subset of the connections has a reliability rating; determine, by the computing device, a reliability rating of the entity based on the subset of the connections to third parties having reliability ratings in the plurality of connections of the entity; and determine, by the computing device, whether or not to register the account for the entity based on the reliability rating.