Systems and methods for identifying one or more candidate computing entities associated with a first user of a first computing entity are disclosed. A first technical ID associated with the first computing entity and one or more parameters associated with the first computing entity are received by the ad system. A first identity fingerprint for the first computing entity is determined by the ad system. One or more candidate computing entities are identified by the ad system based on a similarity between the first identity fingerprint and an associated identity fingerprint of the one or more associated identity fingerprints of the candidate computing entity. First behavioral data is determined by the ad system based on the associated behavioral data of one or more of the one or more candidate computing entities. An advertisement based on the first behavioral data is provided by the ad system.