Bluetooth is a wireless standard that lets devices communicate with each other sans cables or wires. Bluetooth devices are open to all manner of mischief and hacking. When properly configured, Bluetooth can be reasonably safe when properly configured. Key authentication and encryption features are built into Bluetooth, but few users take advantage of these features. Some hacking groups have even figured out how to broadcast unsolicited verbal comments to Bluetooth-enabled cars passing by. This article is the property of the National Security Institute, Inc. and not be copied or redistributed in any fashion without an appropriate licensing agreement.”]
Source: https://www.bankinfosecurity.com/security-qa-bluetooth-technology-a-41