Our latest survey paper on privacy-preserving ML (PPML) is posted on Arxiv. The paper summarizes the recent progress on efficient PPML across algorithm, protocol, and system levels. The title of our paper is “Towards Efficient Privacy-Preserving Machine Learning: A Systematic Review from Protocol, Model, and System Perspectives”. We also prepare a Github repo to continue tracking all the relevant papers in the field “https://github.com/PKU-SEC-Lab/Awesome-PPML-Papers”.