Dictionary Attack on IMU-based Gait Authentication. (arXiv:2309.11766v2 [cs.CR] UPDATED)

We present a novel adversarial model for authentication systems that use gait
patterns recorded by the inertial measurement unit (IMU) built into
smartphones. The attack idea is inspired by and named after the concept of a
dictionary attack on knowledge (PIN or password) based authentication systems.
In particular, this work investigates whether it is possible to build a
dictionary of IMUGait patterns and use it to launch an attack or find an
imitator who can actively reproduce IMUGait patterns that …

adversarial attack authentication concept dictionary attack imu knowledge measurement novel password patterns pin smartphones systems work