Abstract
While smart cities are becoming continuously connected, various protocol and audio interfaces are widely deployed without the full cognizance of the underlying security vulnerabilities involved. Automatic Speaker Verification (ASV), LoRaWan and Zigbee protocols have been adopted and deployed across the existing infrastructure of smart cities. Such protocols among others form the basis of the Personal Area Networks (PANs) and given the fact that such protocols are embedded in the physical devices along with the high number of such devices makes it extremely difficult to update or replace such devices once certain vulnerabilities are discovered. This paper presents an overview of the technologies and examines the security vulnerability of ASV, ZigBee and LoRaWan. While some of the vulnerabilities might be specific to certain technologies, majority of the vulnerabilities apply to other protocols in the PAN landscape.