Anonymous Communications: Mix Networks and Tor

This lecture covers the concept of anonymous communications through mix networks and Tor. It discusses the (n-1) attack, message expiry, heartbeat traffic, Loopix, onion routing, Tor's basic operation, stream tracing attacks, indirect load estimation, website fingerprinting, and the challenges faced by Tor. The instructor emphasizes the importance of privacy beyond content confidentiality, the vulnerability of metadata, and the need to consider various attacks when designing anonymity networks.