1. A method, comprising: receiving, by a server device comprising a processor, a request from a client device for a trust score representative of a degree of trust between a requesting entity and a target entity, the request comprising requesting entity identification information identifying the requesting entity and target entity identification information identifying the target entity; determining, by the server device, the trust score based on the request, comprising: determining, by server the device, a baseline trust score for the target entity based on the target entity identification information; querying, by the server device, one or more network accessible data sources for defined trustworthiness information associated with the requesting entity based on the requesting entity identification information, wherein the defined trustworthiness information reflects a propensity for the requesting entity to trust other entities; determining, by the server device, an adjustment trust score for the requesting entity based on the defined trustworthiness information; and determining, by the server device, the trust score based on the baseline trust score for the target entity and the adjustment trust score; and providing, by the server device, the trust score to the client device based on the determining the trust score.