A defensive man-in-middle approach to filter BLE packets

ABSTRACTIn this paper, we propose an original defensive strategy in which we benefit from the use of Man-in-The-Middle attacks in order to protect some vulnerable BLE devices. More precisely, we describe a tool that uses a Man-in-The-Middle attack to implement a wireless firewall for BLE communications, that is able to block specific commands, make some services invisible on BLE devices, or to force out weak pairing mechanisms.