The Motion Sensor Western: The Good, the Bad, and the Ugly
summary
Motion sensors enable cheap IMU features but also allow concrete attacks: resonant acoustic injection uses chirps in device-specific resonant bands (gyros ~8–28 kHz, accels ~2–13 kHz) to spoof outputs, preventing a drone from ascending and, after 40 minutes of attack, adding >2,000 fake steps and 21 reward points to a tracker. Motion data at 500 Hz sampling plus neural nets now classify words and enable smartwatch keylogging and intoxication detection (30 subjects, BAC>220 AUC 0.91).
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chapters (8)
- 0:00Introduction
- 0:49Agenda
- 1:16The Good
- 11:43The Ugly
- 13:25Case Study
- 17:00Keylogging
- 19:51Intoxication Detection
- 26:08Takeaways
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