15. A system for caller identification and authentication, the system comprising: a telephony recorder configured to record audio data for calls placed to at least one phone number; an authentication server comprising a processor and a non-transitory memory, the memory storing instructions that, when executed by the processor, cause the processor to perform processing comprising: receiving audio data including speech of a plurality of telephone calls; using audio data for at least a subset of the plurality of telephone calls to populate a plurality of word clusters, each word cluster being associated with a specific demographic, the populating of the plurality of word clusters comprising: for each of the subset of the plurality of telephone calls, determining demographic data for a telephone caller making the telephone call, and analyzing the audio data to identify at least one characteristic of the speech of the telephone caller, and populating at least one word cluster with the at least one characteristic of the speech of each telephone caller associated with the specific demographic based on the demographic data for the telephone caller; and using audio data for at least one of the plurality of telephone calls to identify the telephone caller making the telephone call, the identifying comprising: analyzing the audio data to identify at least one characteristic of the speech of the telephone caller, comparing the at least one characteristic of the speech of the telephone caller to the plurality of word clusters, determining a most similar word cluster of the plurality of word clusters to the audio data based on a similarity of the at least one characteristic of the speech of the telephone caller and the at least one associated characteristic of the most similar cluster, receiving a purported identity of the telephone caller, the purported identity including caller demographic data, determining whether the caller demographic data matches the demographic associated with the most similar word cluster, and identifying the telephone caller as: likely having the purported identity in response to determining that the caller demographic data matches the demographic associated with the most similar word cluster, or unlikely to have the purported identity in response to determining that the caller demographic data does not match the demographic associated with the most similar word cluster.
15. A system for caller identification and authentication, the system comprising: a telephony recorder configured to record audio data for calls placed to at least one phone number; an authentication server comprising a processor and a non-transitory memory, the memory storing instructions that, when executed by the processor, cause the processor to perform processing comprising: receiving audio data including speech of a plurality of telephone calls; using audio data for at least a subset of the plurality of telephone calls to populate a plurality of word clusters, each word cluster being associated with a specific demographic, the populating of the plurality of word clusters comprising: for each of the subset of the plurality of telephone calls, determining demographic data for a telephone caller making the telephone call, and analyzing the audio data to identify at least one characteristic of the speech of the telephone caller, and populating at least one word cluster with the at least one characteristic of the speech of each telephone caller associated with the specific demographic based on the demographic data for the telephone caller; and using audio data for at least one of the plurality of telephone calls to identify the telephone caller making the telephone call, the identifying comprising: analyzing the audio data to identify at least one characteristic of the speech of the telephone caller, comparing the at least one characteristic of the speech of the telephone caller to the plurality of word clusters, determining a most similar word cluster of the plurality of word clusters to the audio data based on a similarity of the at least one characteristic of the speech of the telephone caller and the at least one associated characteristic of the most similar cluster, receiving a purported identity of the telephone caller, the purported identity including caller demographic data, determining whether the caller demographic data matches the demographic associated with the most similar word cluster, and identifying the telephone caller as: likely having the purported identity in response to determining that the caller demographic data matches the demographic associated with the most similar word cluster, or unlikely to have the purported identity in response to determining that the caller demographic data does not match the demographic associated with the most similar word cluster. 20. The system of claim 15 , wherein: the processing further comprises receiving a threat score for the telephone caller; and the identifying the telephone caller as unlikely to have the purported identity comprises affecting the threat score.