Spattack: Subgroup Poisoning Attacks on Federated Recommender Systems.

@inproceedings{yan-2026-spattack, author = {Bo Yan and Yurong Hao and Dingqi Liu and Huabin Sun and Pengpeng Qiao and Wei Yang Bryan Lim and Yang Cao and Chuan Shi}, editor = {Hakim Hacid and Yoelle Maarek and Francesco Bonchi and Ido Guy and Emine Yilmaz}, title = {{Spattack: Subgroup Poisoning Attacks on Federated Recommender Systems}}, booktitle = {{Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026}}, pages = {6529--6540}, publisher = {ACM}, year = {2026}, url = {https://doi.org/10.1145/3774904.3792552}, doi = {https://doi.org/10.1145/3774904.3792552} }