Nlp-based call monitoring method for preventing voice phishing and apparatus therefor

Abstract

Disclosed is a natural language processing (NLP) based call monitoring method for preventing voice phishing. The method includes the operations of: verifying a calling number ID when a call is received; when a voice signal of a caller is received, recognizing the caller's voiceprint, and firstly confirming whether the recognized voiceprint matches the voiceprint of a known voice phisher; based on the caller's speech keywords and speech patterns, secondly confirming whether voice phishing is or is not occurring; determining the caller as a voice phisher based on the risk score derived from the first confirmation and the second confirmation; and when the caller is determined as a voice phisher, taking corresponding measures. Therefore, frequency of damages due to voice phishing can be reduced.

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