5. One or more non-transitory computer-readable media having computer-executable instructions stored thereon that, when executed by a computing device, cause the computing device to: receive a sample associated with an in-progress telephone call, wherein receiving the sample associated with the in-progress telephone call comprises capturing one or more utterances that are responsive to prompts provided by a representative during the in-progress telephone call; determine a voice biometric confidence score based on the sample; determine to route the in-progress telephone call to a first endpoint based on the voice biometric confidence score, wherein determining to route the in-progress telephone call to the first endpoint based on the voice biometric confidence score comprises: based on the voice biometric confidence score falling below a threshold during the in-progress telephone call, providing routing information to the representative, the routing information being configured to cause the representative to transfer the in-progress telephone call to a specialized representative for handling as a potentially illegitimate call; and based on the in-progress telephone call being transferred to the specialized representative, determine to initiate recording and analysis of the in-progress telephone call, wherein a recording of the in-progress telephone call is saved and sampled to create a defensive voiceprint for identifying a caller associated with the in-progress telephone call as an illegitimate caller.
5. One or more non-transitory computer-readable media having computer-executable instructions stored thereon that, when executed by a computing device, cause the computing device to: receive a sample associated with an in-progress telephone call, wherein receiving the sample associated with the in-progress telephone call comprises capturing one or more utterances that are responsive to prompts provided by a representative during the in-progress telephone call; determine a voice biometric confidence score based on the sample; determine to route the in-progress telephone call to a first endpoint based on the voice biometric confidence score, wherein determining to route the in-progress telephone call to the first endpoint based on the voice biometric confidence score comprises: based on the voice biometric confidence score falling below a threshold during the in-progress telephone call, providing routing information to the representative, the routing information being configured to cause the representative to transfer the in-progress telephone call to a specialized representative for handling as a potentially illegitimate call; and based on the in-progress telephone call being transferred to the specialized representative, determine to initiate recording and analysis of the in-progress telephone call, wherein a recording of the in-progress telephone call is saved and sampled to create a defensive voiceprint for identifying a caller associated with the in-progress telephone call as an illegitimate caller. 6. The one or more non-transitory computer-readable media of claim 5 , wherein the threshold is dynamically adjusted over time based on call metrics information associated with a plurality of voice biometric confidence scores for a plurality of previously flagged calls.