CenKL: Information-Theoretic Visibility into Censorship Circumvention Traffic Patterns
A. Ortwein, A. Huremagic, S. Hussain, H. Bergen, J. J. Daymude, Diwen Xue, J. R. Crandall, and R. Ensafi
In: IEEE Symposium on Security and Privacy (S&P) 2027.

CryptoFilter: Privacy-Preserving Traffic Analysis of Weak Transport Layer Encryption at Internet Gateways
B. Mixon-Baca, Diwen Xue, R. Ensafi and J. Crandall
In: Workshop on Privacy in the Electronic Society (WPES), 2025

Fingerprinting Deep Packet Inspection Devices by their Ambiguities
Diwen Xue, A. Huremagic, W. Wang, R. Sundara Raman, and R. Ensafi
In: ACM SIGSAC Conference on Computer and Communications Security (CCS) 2025.
🏅 IRTF Applied Networking Research Prize 2025

Blocking-Resistant Communication Using Push Notifications
P. Kumar, Diwen Xue, A. Ortwein, C. Bocovich, Harry, and R. Ensafi
In: Privacy Enhancing Technologies (PETS) 2025.

The Discriminative Power of Cross-layer RTTs in Fingerprinting Proxy Traffic
Diwen Xue, R. Stanley, P. Kumar, and R. Ensafi
In: Network and Distributed System Security (NDSS) Symposium 2025.

Is Custom Congestion Control a Bad Idea for Circumvention Tools?
W. Wang, Diwen Xue, , P. Kumar, A. Mishra, Anonymous, and R. Ensafi
In: Free and Open Communications on the Internet (FOCI) 2025.

Fingerprinting Obfuscated Proxy Traffic with Encapsulated TLS Handshakes
Diwen Xue, M. Kallitsis, A. Houmansadr, and R. Ensafi
In: USENIX Security Symposium (USENIX) 2024.

Bridging Barriers: A Survey of Challenges and Priorities in the Censorship Circumvention Landscape
Diwen Xue*, A. Ablove*, R. Ramesh, G. Kwak-Danciu and R. Ensafi
In: USENIX Security Symposium (USENIX) 2024.

Attacking Connection Tracking Frameworks as used by Virtual Private Networks
B. Mixon-Baca, J. Knockel, Diwen Xue, T. Ayyagari, D. Kapur, R. Ensafi and J. Crandall
In: Privacy Enhancing Technologies (PETS) 2024.

The Use of Push Notification in Censorship Circumvention
Diwen Xue, and R. Ensafi
In: Free and Open Communications on the Internet (FOCI) 2023.

TSPU: Russia’s Decentralized Censorship System
Diwen Xue, B.Mixon-Baca, ValdikSS, A. Ablove, B. Kujath, J. Crandall, and R. Ensafi
In: Internet Measurement Conference (IMC) 2022.

OpenVPN is Open to VPN Fingerprinting
Diwen Xue, R. Ramesh, A. Jain, M. Kallitsis, J. Halderman, J. Crandall, and R. Ensafi
In: USENIX Security Symposium (USENIX) 2022.
🏅 USENIX Best Paper & Internet Defense Prize 2022

VPNalyzer: Systematic Investigation of the VPN Ecosystem
R. Ramesh, L. Evdokimov, Diwen Xue, and R. Ensafi
In: Network and Distributed System Security Symposium (NDSS) 2022.
🏅 First Place at the CSAW '22 Applied Research Competition.

Throttling Twitter: An Emerging Censorship Technique in Russia
Diwen Xue, R. Ramesh, ValdikSS, L. Evdokimov, A. Viktorov, A. Jain, E. Wustrow, S. Basso, and R. Ensafi
In: Internet Measurement Conference (IMC) 2021.

🏅 Highest Scoring Short Paper at IMC'21