34th session was on Mixnets as lots of people suggested in the past. As a preparation we read the Loopix paper. Piotrowska, Ania M., et al. “The loopix anonymity system.” 26th {USENIX} Security Symposium ({USENIX} Security 17). 2017. https://www.usenix.org/system/files/conference/usenixsecurity17/sec17-piotrowska.pdf The corresponding talk by Ania Piotrowska is very much worth watching as an additional resource. https://www.youtube.com/watch?v=R-yEqLX_UvI
