Privacy firewall

• US 10,586,054 B2
• Filed: 12/26/2018
• Issued: 03/10/2020
• Est. Priority Date: 08/10/2012
• Status: Active Grant

• Current Assignee: Visa International Service Association (Visa, Inc.)
• Original Assignee: Visa International Service Association (Visa, Inc.)
• Inventors: Nagasundaram, Sekhar, Aissi, Selim
• Primary Examiner(s): Hailu, Teshome
• Application Number:
  US16/232,767
• Publication Number:
  US 20190130115A1
• Time in Patent Office: 440 Days
• Field of Search: 713150
• CPC Class Codes: G06F 16/285 Clustering or classification
• CPC Class Codes: G06F 21/60 Protecting data
• CPC Class Codes: G06F 21/606 by securing the transmission between two devices or processes
• CPC Class Codes: G06F 21/6254 by anonymising data, e.g. decorrelating personal data from the owner's identification
• CPC Class Codes: H04L 63/0209 Architectural arrangements, e.g. perimeter networks or demilitarized zones
• CPC Class Codes: H04L 63/107 wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals

Abstract

Embodiments of the invention relate to systems and methods for providing an anonymization engine. One embodiment of the present invention relates to a method comprising receiving a message directed at a recipient computer located outside a secure area by a privacy computer located within a secure area. The privacy computer may identify private information using a plurality of privacy rules and anonymize the message according to the plurality of privacy rules. Another embodiment may be directed to a method comprising receiving a request for sensitive data from a requesting computer. An anonymization computer may determine a sensitive data record associated with the request and may anonymize the sensitive data record by performing at least two of: removing unnecessary sensitive data entries from the sensitive data record, masking the sensitive data entries to maintain format, separating the sensitive data entries into associated data groupings, and de-contexting the data.

Claims

1. A method comprising:

receiving, by a recipient computer located outside a secure area, an anonymized message from a privacy computer located within the secure area, wherein the privacy computer generated the anonymized message by anonymizing a message including sensitive data based on a context of the message, and wherein the message was received by the privacy computer from a user computer, wherein anonymizing the message includes at least two different data alteration processes;

obtaining, by the recipient computer, one or more privacy rules applicable to the anonymized message; and

recreating, by the recipient computer, at least a portion of the sensitive data by applying the one or more privacy rules to the anonymized message,

wherein the anonymized message includes an embedded hidden record, and wherein the embedded hidden record includes instructions for recreating at least the portion of the sensitive data using the one or more privacy rules,

wherein the at least two different data alteration processes include two or more of the following;

removing unnecessary sensitive data;

masking the sensitive data to maintain format;

separate the sensitive data into associated data groupings; and

de-contexting the sensitive data.

2. The method of claim 1, wherein the context of the message includes at least one of an identity of the user computer, an identity of the recipient computer, an access right of the recipient computer, or the one or more privacy rules associated with the recipient computer.

3. The method of claim 1, wherein at least the portion of the sensitive data is recreated by reversing anonymization of at least the portion of the sensitive data using the one or more privacy rules.

4. The method of claim 1, wherein the anonymized message includes permanently altered data.

5. The method of claim 4, wherein the permanently altered data is unusable by the recipient computer.

6. The method of claim 4, wherein the privacy computer generates the permanently altered data by applying at least one of scrambling or polymorphism.

7. A recipient computer located outside a secure area, the recipient computer comprising one or more processors and a non-transitory machine-readable storage medium, including instructions that, when executed by the one or more processors, cause the one or more processors to:

receive an anonymized message from a privacy computer located within the secure area, wherein the privacy computer generated the anonymized message by anonymizing a message including sensitive data based on a context of the message, and wherein the message was received by the privacy computer from a user computer located within the secure area, wherein anonymizing the message includes at least two different data alteration processes;

obtain one or more privacy rules applicable to the anonymized message; and

recreate at least a portion of the sensitive data by applying the one or more privacy rules to the anonymized message,

wherein the anonymized message includes an embedded hidden record, and wherein the embedded hidden record includes instructions for recreating at least the portion of the sensitive data using the one or more privacy rules,

wherein the at least two different data alteration processes include two or more of the following;

removing unnecessary sensitive data;

masking the sensitive data to maintain format;

separate the sensitive data into associated data groupings; and

de-contexting the sensitive data.

8. The recipient computer of claim 7, wherein the context of the message includes at least one of an identity of the user computer, an identity of the recipient computer, an access right of the recipient computer, or the one or more privacy rules associated with the recipient computer.

9. The recipient computer of claim 7, wherein at least the portion of the sensitive data is recreated by reversing anonymization of at least the portion of the sensitive data using the one or more privacy rules.

10. A method comprising:

receiving, by a privacy computer located within a secure area, a message directed at a recipient computer located outside the secure area, wherein the message includes sensitive data;

identifying, by the privacy computer, the sensitive data using a plurality of privacy rules;

anonymizing, by the privacy computer, the sensitive data according to the plurality of privacy rules to generate anonymized data, wherein anonymizing the sensitive data according to the plurality of privacy rules includes using at least two data alteration processes;

generating, by the privacy computer, a hidden record including the anonymized data; and

forwarding the hidden record and the message including the anonymized data to the recipient computer located outside the secure area,

wherein the hidden record includes instructions for recreating at least a portion of the sensitive data using the plurality of privacy rules,

wherein the at least two different data alteration processes include two or more of the following;

removing unnecessary sensitive data;

masking the sensitive data to maintain format;

separate the sensitive data into associated data groupings; and

de-contexting the sensitive data.

11. The method of claim 10, wherein the plurality of privacy rules include limitations on the type of information that is allowed to be sent outside the secure area.

12. The method of claim 10, wherein identifying the sensitive data using the plurality of privacy rules further comprises:

determining a set of the plurality of privacy rules associated with the recipient computer; and

comparing the sensitive data to the set of the plurality of privacy rules.