9. A method for assessing security threats, the method comprising: identifying, a communications channel to be monitored, wherein identifying the communications channel to be monitored is based, at least in part, on a security risk factor; executing, at a processor, an automatic speech recognition process on voice communication signals on the communications channel, the automatic speech recognition process being executed to determine whether a word from a limited vocabulary is recognized in the voice communications signals on the communications channel; in response to determining that the word from the limited vocabulary is recognized in the voice communications signals on the communications channel, retrieving identification information associated with the voice communications signals on the communications channel, and storing data indicating the word recognized in the voice communications signals on the communications channel and the identification information; in response to determining that the word from the limited vocabulary is not recognized in the voice communications signals on the communications channel, not storing data associated with the voice communications signals on the communications channel; determining whether recognition of the word from the limited vocabulary is a first occurrence for the communications channel; and in response to determining that the recognition of the word from the limited vocabulary is a repeat occurrence for the communications channel, storing additional data indicating the repeat occurrence of the word in the voice communications signals on the communications channel.
12. The method of claim 9 , wherein the limited vocabulary comprises a word associated with criminal activity.