Synthetic online entity detection

A method that includes one or more processing devices performing operations comprising:

• obtaining, by a contributor external-facing device of a fraud detection computing system via communications with contributor computing systems over a public data network, transaction data and account data for online entities;
• receiving, by a client external-facing device of the fraud detection computing system from a client computing system and during a target transaction between the client computing system and a consumer computing system, a query regarding a presence of a fraud warning for a target consumer associated with the consumer computing system;
• generating, in a data structure and by a fraud detection server system based, at least in part, upon the account data and the transaction data, entity links between primary entity objects identifying primary entities for a plurality of accounts and a secondary entity object identifying the target consumer as a secondary entity for the plurality of accounts;
• correlating, by the fraud detection server system, values between attributes of the secondary entity object and attributes of the primary entity objects;
• determining, based on the correlation, that the secondary entity object for the target consumer has different values for one or more of a name attribute and an address attribute than the primary entity objects;
• generating, by the fraud detection server system and responsive to the query, a fraud warning based on the secondary entity object for the target consumer having the different values for the one or more of the name attribute and the address attribute;
• and
• transmitting, by the client external-facing device and prior to completion of the target transaction, the fraud warning to the client computing system.

A non-transitory computer-readable storage medium having program code that is executable by a processor device to cause a computing device to perform operations, the operations comprising:

• obtaining transaction data and account data for online entities;
• in response to receiving from a client computing system and during a target transaction between the client computing system and a consumer computing system, a query regarding a presence of a fraud warning for a target consumer associated with the consumer computing system;
• generating, in a data structure and based, at least in part, upon the account data and the transaction data, entity links between primary entity objects identifying primary entities for a plurality of accounts and a secondary entity object identifying the target consumer as a secondary entity for the plurality of accounts;
• correlating values between attributes of the secondary entity object and attributes of the primary entity objects;
• determining, based on the correlation, that the secondary entity object for the target consumer has different values for one or more of a name attribute and an address attribute than the primary entity objects;
• generating a fraud warning based on the secondary entity object for the target consumer having the different values for the one or more of the name attribute and the address attribute;
• and
• causing the fraud warning to be transmitted to the client computing system prior to completion of the target transaction.