PRIVACY AGAINST INFERENCE ATTACKS UNDER MISMATCHED PRIOR
First Claim
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1. A method for processing a user data comprising the steps of:
- accessing said user data wherein said user data consists of a public data;
comparing said user data to a survey data;
determining a probability of a private data in response to said comparison; and
altering said public data to generate an altered data in response to said probability having a value higher than a predetermined threshold.
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Abstract
A methodology to protect private data when a user wishes to publicly release some data about himself, which is can be correlated with his private data. Specifically, the method and apparatus teach comparing public data with survey data having public data and associated private data. A joint probability distribution is performed to predict a private data wherein said prediction has a certain probability. At least one of said public data is altered or deleted in response to said probability exceeding a predetermined threshold.
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Citations
21 Claims
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1. A method for processing a user data comprising the steps of:
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accessing said user data wherein said user data consists of a public data; comparing said user data to a survey data; determining a probability of a private data in response to said comparison; and altering said public data to generate an altered data in response to said probability having a value higher than a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of protecting a user private data comprising the steps of:
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collecting a plurality of user public data associated with a user; comparing said plurality of public data to a plurality of public survey data wherein said public survey data is associated with a plurality of private survey data; determining a probability of said user private data in response to said comparison, wherein the probability of said user private data being accurate exceeds a threshold value; altering at least one of said plurality of user public data to generate a plurality of altered user public data; comparing said plurality of altered user public data to said plurality of public survey data; and determining said probability of said user private data in response to said comparison of said plurality of altered public data and said plurality of public survey data, wherein the probability of said user private data is below said threshold value. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for processing a user data comprising:
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a memory for storing said user data wherein said user data consists of a public data; a processor for comparing said user data to a survey data, for determining a probability of a private data in response to said comparison, and for altering said public data to generate an altered data in response to said probability having a value higher than a predetermined threshold; and a network interface for transmitting said altered data. - View Dependent Claims (16, 17, 18, 19, 20)
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21. (canceled)
Specification