Rui Yang 0032 Qindong Sun Han Cao 0004 Kai Lin Chao Shen 0001 FeatureTrojan: Boosting stealthy and steady backdoor attacks with feature poisoning and fine-tuning injection. 2026 108717 198 Neural Networks https://doi.org/10.1016/j.neunet.2026.108717 db/journals/nn/nn198.html#YangSCLS26 streams/journals/nn