Method and system for obfuscation of granular data while retaining data privacy

A system for obfuscating granular transaction data via the introduction of noise, comprising:

• a transaction database of a processing server configured to store a plurality of transaction data entries, wherein each transaction data entry is a structured data set configured to store data related to an electronic transaction including at least a primary account number and one or more additional transaction data values where the one or more additional transaction values includes at least a transaction amount and merchant identifier;
• a receiving device of the processing server configured to receive a data signal from a computing system superimposed with a data request, wherein the data request includes at least one or more selection criteria and one or more desired metrics where each of the one or more desired metrics corresponds to one of the one or more additional transaction values;
• a querying module of the processing server configured to execute a query on the transaction database to identify a subset of transaction data entries based on a correspondence between the one or more selection criteria and the one or more additional transaction data values included in each transaction data entry included in the subset;
• an analytic module of the processing server configured to identify a metric value for each of the one or more desired metrics based on the corresponding additional transaction value in each of the transaction data entries included in the identified subset;
• a data adjustment module of the processing server configured to insert noise to modify the identified subset of transaction data entries by (i) adjusting the primary account number and/or at least one of the one or more additional transaction data values included in at least two of the transaction data entries included in the identified subset, and/or (ii) adding at least one transaction data entry to the identified subset and removing at least one transaction data entry in the identified subset, where the inserted noise adjusts the metric value identified for each of the one or more desired metrics within a predetermined range of the identified metric value;
• and
• a transmitting device of the processing server configured to electronically transmit a data signal superimposed with at least the modified subset of transaction data entries to the computing system.