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System and method for user-privacy-aware communication monitoring and analysis

  • US 10,079,933 B2
  • Filed: 05/10/2016
  • Issued: 09/18/2018
  • Est. Priority Date: 10/21/2012
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • maintaining a voice signature database including a received digital voice signature of a predefined target individual;

    receiving monitored voice calls conducted in a communication network;

    comparing speech content of the monitored voice calls to the received digital voice signature of the predefined target individual maintained in the voice signature database;

    selecting, based on the comparison, a partial subset of the monitored voice calls that are suspected of having been conducted by the predefined target individual, the selected partial subset of the voice calls include speech content that matches the received digital voice signature of the predefined target individual;

    after selecting the partial subset, encrypting the selected partial subset with an encryption key that is associated with the target individual;

    storing only the encrypted partial subset of the voice calls from the received monitored voice calls in a call database;

    upon showing that the voice calls in the partial subset were conducted by the target individual with a confidence level greater than a threshold, receiving a decryption key that is associated with the target individual; and

    decrypting the encrypted partial subset of the voice calls retrieved from the call database using the decryption key, and providing the decrypted voice calls for analysis.

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