Methods, apparatus, systems and computer readable mediums for anonymized identification of payment card accounts belonging to a same entity

A non-transitory computer readable medium having instructions stored thereon that if executed by a machine result in a method comprising:

• receiving data representing a plurality of payment card transactions made in association with payment card accounts, the data including personally identifiable information;
• anonymizing the data by hashing the personally identifiable information;
• determining a plurality of the payment card accounts that belong to a same entity based on the hashed personally identifiable information without decoding the hashed personally identifiable information to recover the personally identifiable information;
• and
• identifying the determined plurality of payment card accounts as belonging to the same entity.

A system comprising:

• a processing device to receive data representing a plurality of payment card transactions made in association with payment card accounts, the data including personally identifiable information;
• a processing device to anonymize the data by hashing the personally identifiable information;
• a processing device to determine a plurality of the payment card accounts that belong to a same entity based on the hashed personally identifiable information without decoding the hashed personally identifiable information to recover the personally identifiable information;
• and
• a processing device to identify the determined plurality of payment card accounts as belonging to the same entity.