I just gave a keynote talk on "Securing Secure Aggregation: Mitigating Multi-Round Privacy Leakage in Federated Learning” at the International Workshop on Federated Learning for User Privacy and Data Confidentiality in Conjunction with ICML 2021 (FL-ICML’21)

Paper - https://arxiv.org/abs/2106.03328

Video - https://icml.cc/virtual/2021/workshop/8359 (starting at time 10:17:00)