A method for detecting unauthorized access is provided. The method includes receiving a voice input associated with a request to access an account. A request voice signature corresponding to the voice input associated with the request is generated. An authorized voice signature corresponding to the account is retrieved. The request voice signature corresponding to the voice input is compared with the authorized voice signature corresponding to the account. Unauthorized access is detected in response to the comparison.

 
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< Method and apparatus for generating and updating a voice tag

> Exchange and conference communication method therefor

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