Instruction: Analyze the vulnerability of Federated Learning to Byzantine attacks and propose mitigation strategies.
Context: This question gauges the candidate's understanding of security threats, specifically Byzantine attacks, and their ability to design robust Federated Learning systems.
Official answer available
Preview the opening of the answer, then unlock the full walkthrough.
The way I'd explain it in an interview is this: Byzantine attacks matter because a small number of malicious clients can send arbitrary or strategically crafted updates that degrade the model or skew it toward harmful behavior. In federated systems, the server often has limited visibility...