QuestionQ87

Privacy Enhancing Technologies

How does k-anonymity help protect privacy in microdata sets?

  • A By ensuring that every record in a set is part of a group of “K” records having similar identifying information.
  • B By switching values between “K” records in order to preserve most statistics while still maintaining privacy
  • C By adding sufficient noise to the data in order to hide the impact of any one individual
  • D By encrypting data using value “K” to create ciphertext
Explanation

K-anonymity makes each record indistinguishable from at least (K-1) other records based on quasi-identifying information, reducing the chance that an individual can be re-identified from the released data.

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