Researchers have found a way around the Media Access Control (MAC) address randomisation feature used by Bluetooth Low Energy (BLE) to protect users and their devices from being identified and tracked. For anyone unfamiliar with the ins and outs of BLE security (see below), the first and most surprising issue confirmed by Tracking Anonymized Bluetooth Devices from Boston University’s Johannes Becker, David Li, and David Strobinski, is that device makers have a lot of leeway in how they implement BLE security, or whether they need to bother at all.

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