Pmeta-TLA combines a frame-level timbre leakage trigger with meta-learning and PCGrad to inject multiple backdoors into speech models in one training run, claiming better attack success, stealth, and lower cost than baselines.
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Pmeta-TLA: Backdoor Attacks for Speech Classification Models via Meta-Learning with Timbre Leakage Attack
Pmeta-TLA combines a frame-level timbre leakage trigger with meta-learning and PCGrad to inject multiple backdoors into speech models in one training run, claiming better attack success, stealth, and lower cost than baselines.