arXiv AI By Manoj Twarakavi, Venkata Sriram Siddhardh Nadendla

StratFL: Countering Covert Model Poisoning Attacks with Strategic Federated Learning

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The paper introduces StratFL, a strategy for federated learning that counters covert model poisoning attacks by modeling the interaction between the server and attacker as an imperfect repeated game. It proposes new belief‑update algorithms for both parties and an adversarial search method to detect and mitigate intermittent poisoned updates. Experiments on MNIST and CIFAR‑10 show that StratFL improves accuracy by about 10% over existing defenses while demonstrating convergence of the belief updates across various security scenarios.

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