Privacy firewall

• US 9,665,722 B2
• Filed: 08/12/2013
• Issued: 05/30/2017
• 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:
  US13/964,896
• Publication Number:
  US 20140047551A1
• Time in Patent Office: 1,387 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 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;

removing unnecessary sensitive data,

masking the sensitive data to maintain format,

separating the sensitive data into associated data groupings, and

de-contexting the sensitive data;

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.

2. The method of claim 1, wherein the plurality of privacy rules include limitations on the type of information that is allowed to be sent outside the secure area.

3. The method of claim 1, 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.

4. The method of claim 1, wherein the anonymization of at least the portion of the anonymized data is reversed by the recipient computer to obtain at least a portion of the sensitive data.

5. The method of claim 1, wherein anonymizing of the data occurs without encryption.

6. A 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 a message directed at a recipient computer located outside the secure area, wherein the message includes sensitive data;

identify the sensitive data using a plurality of privacy rules;

anonymize the sensitive data according to the plurality of privacy rules, wherein anonymizing the sensitive data according to the plurality of privacy rules includes;

removing unnecessary sensitive data,

masking the sensitive data to maintain format,

separating the sensitive data into associated data groupings, and

de-contexting the sensitive data;

generate a hidden record including the anonymized data; and

forward the hidden record and the message including the anonymized data to the recipient computer located outside the secure area.

7. The computer of claim 6, wherein the plurality of privacy rules include limitations on the type of information that is allowed to be sent outside the secure area.

8. The computer of claim 6, 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 private information to the set of the plurality of privacy rules.

9. The computer of claim 6, wherein anonymizing of the data occurs without encryption.

10. A method comprising:

receiving a request for sensitive data from a requesting computer;

determining a sensitive data record including the sensitive data associated with the request;

determining anonymization rules and search criteria associated with the requesting computer, wherein the search criteria specifies a portion of the sensitive data in the sensitive data record to be searched by the requesting computer;

flagging the portion of the sensitive data in the sensitive data record specified by the search criteria;

anonymizing, by an anonymization computer, the sensitive data record without anonymizing the flagged portion of the sensitive data, wherein anonymizing the sensitive data record includes using the anonymization rules to generate an anonymized data record by;

removing unnecessary sensitive data from the sensitive data record;

masking the sensitive data to maintain format;

separating the sensitive data into associated data groupings; and

de-contexting the sensitive data; and

sending the anonymized data record to the requesting computer, wherein the requesting computer thereafter searches the anonymized data record using the search criteria.

11. The method of claim 10, wherein the anonymization rules are designed to anonymize the sensitive data record for a particular purpose.

12. The method of claim 10, wherein the anonymized data record includes a hidden record identifying which anonymization rules have been executed on the anonymized data record, and wherein the recipient computer uses the hidden record to reverse the anonymization of the anonymized data record.

13. The method of claim 10, wherein the anonymization computer may reverse the anonymization processes using anonymization data stored during anonymization.

14. The method of claim 10, wherein anonymizing of the data record occurs without encryption.

15. A 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 a request for sensitive data from a requesting computer;

determine a sensitive data record including sensitive data associated with the request;

determine anonymization rules and search criteria associated with the requesting computer, wherein the search criteria specifies a portion of the sensitive data in the sensitive data record to be searched by the requesting computer;

flag the portion of the sensitive data in the sensitive data record specified by the search criteria;

anonymize the sensitive data record without anonymizing the flagged portion of the sensitive data, wherein anonymizing the sensitive data record includes using the anonymization rules to generate an anonymized data record by;

removing unnecessary sensitive data from the sensitive data record;

masking the sensitive data to maintain format;

separating the sensitive data into associated data groupings;

identifying search criteria from the sensitive data record; and

de-contexting the sensitive data; and

send the anonymized data record to the requesting computer, wherein the requesting computer thereafter searches the anonymized data record using the search criteria.

16. The computer of claim 15, wherein the anonymization rules are designed to anonymize the sensitive data record for a particular purpose.

17. The computer of claim 15, wherein the anonymized data record includes a hidden record identifying which anonymization rules have been executed on the anonymized data record, wherein the recipient computer uses the hidden record to reverse the anonymization of the anonymized data record.

18. The computer of claim 15, wherein the anonymization computer may reverse the anonymization processes using anonymization data stored during anonymization.

19. The computer of claim 15, wherein anonymizing of the data record occurs without encryption.