MASTERKEY: Practical Backdoor Attack Against Speaker Verification Systems. (arXiv:2309.06981v1 [cs.CR])

Speaker Verification (SV) is widely deployed in mobile systems to
authenticate legitimate users by using their voice traits. In this work, we
propose a backdoor attack MASTERKEY, to compromise the SV models. Different
from previous attacks, we focus on a real-world practical setting where the
attacker possesses no knowledge of the intended victim. To design MASTERKEY, we
investigate the limitation of existing poisoning attacks against unseen
targets. Then, we optimize a universal backdoor that is capable of attacking
arbitrary targets. …

attack attacker attacks authenticate backdoor compromise focus knowledge mobile speaker verification systems verification verification systems voice work world