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, wherein the request to register an account for an entity includes credentials of the account of the entity on one of the one or more online communication sites; obtain, by the computing device and from one or more online communication sites, social data identifying a plurality of social connections between an entity and a plurality of respective third parties; identify, by the computing device, at least a subset of the social connections, wherein each third party in the subset of the social connections has a reliability rating; determine, by the computing device, a reliability rating of the entity based on the subset of the social connections to third parties having reliability ratings in the plurality of social 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.