This talk covers our recent research on the (in)securities of proprietary and standard wireless security protocols used daily by millions of devices and users. In particular, I will cover the BLUR attacks on Bluetooth, a novel class of threats capable of exploiting Bluetooth Classic from Bluetooth Low Energy and vice versa. Then, I will report on our security evaluation of protocol-level Bluetooth threats on vehicles (i.e., cars), a currently unexplored by impactful attack surface. Next, I will shift to proprietary wireless protocols and describe our security assessments of Xiaomi and Fitbit fitness trackers’ proprietary protocols. Finally, I will conclude by covering our latest work on custom Xiaomi e-scooters’ wireless protocols.