The one on the bluetooth headphone vulnerabilities was quite fun: https://media.ccc.de/v/39c3-bluetooth-headphone-jacking-a-key-to-your-phone https://media.ccc.

The one on the bluetooth headphone vulnerabilities was quite fun: https://media.ccc.de/v/39c3-bluetooth-headphone-jacking-a-key-to-your-phone https://media.ccc.de/v/39c3-bluetooth-headphone-jacking-a-ke...