Knob

KNOB (Key Negotiation of Bluetooth) is a security vulnerability affecting Bluetooth BR/EDR (Basic Rate/Enhanced Data Rate) connections. Discovered by researchers in 2019, it allows attackers to interfere with the encryption key negotiation process, reducing the entropy of the keys and thus making them easier to crack. This vulnerability can enable attackers to eavesdrop on or manipulate data exchanged between paired devices. To mitigate KNOB attacks, it's crucial for Bluetooth device manufacturers to implement stronger encryption practices and firmware updates that address this specific vulnerability.