The Bluetooth Impersonation Attacks (BIAS) Security vulnerability seems to be affecting most standards compliant bluetooth devices. Bluetooth SIG has a few recommendations on what to do here: https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/ As far as I understand, the kernel is not vulnerable to the Key Negotiation-attack. But are any of the other recommendations that are listed implemented in bluez? Thanks, Per Waagø