Cheng Tan

Subspace-Guided Unlearning and Recovery: Poisoning Defense for Hierarchical Federated Learning in LEO Satellite Networks

Low Earth Orbit (LEO) satellite networks are increasingly adopting Federated Learning (FL) for privacy-preserving collaborative model training. However, this paradigm remains vulnerable to backdoor attacks where compromised satellites inject hidden triggers into their local model updates. Existing defenses are not suit...