The embargo of our paper "Timeless Timing Attacks and Preload Defenses in Tor's DNS Cache" has been lifted (@pulls).

https://www.usenix.org/conference/usenixsecurity23/presentation/dahlberg

We show that a remote attacker can probe the state of DNS caches at Tor exit relays without false positives; we also provide short-term mitigations (merged), and evaluate a long-term defense with privacy-preserving DNS cache measurements at exits operated by @dfri (@ln4711 @jn9999 @eliasr). Ironically, the long-term defense could boost cache-hits by 2-3x.