1. Practical Bluetooth Traffic Sniffing: Systems and Privacy Implications‘‘ ’’
Wahhab Albazrqaoe Jun Huang
Guoliang Xing

2. Security 
Target 
Exploit 
Solution

3. Target: Bluetooth    Secret hopping phase
Vendor-dependent adaptive hopping 
Interference in the crowded 2.4 GHz band

4. Exploit: BlueEar     Traffic filtering Basic channel acquisition
Adapted channel acquisition 
Interference avoidance

5. System Architecture

6. DESIGN OF BLUEEAR    Clock Acquisition Sub-channel Classification
Selective Jamming

7. Brute Force Clock Acquisition

8. Problem

9. Selective Jamming

10. Packet-based Classifier

11. Spectrum Sensing-based Classifier

12. Hybrid Classifier

13. IMPLEMENTATION

14. PERFORMANCE

18. How to
fix
Flip n-20 status of good sub-channels randomly

19. Thank
You!
Any
Questions?