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Refereed Publications
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Network Responses to Russia's Invasion of Ukraine in 2022: A Cautionary Tale for Internet Freedom
Reethika Ramesh*, R. Sundara Raman*, A. Virkud, A. Dirksen, A. Huremagic, D. Fifield,
D. Rodenburg, R. Hynes, D. Madory, and R. Ensafi (* joint first authors)
To Appear In: USENIX Security Symposium 2023 (USENIX Security)
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CERTainty: Detecting DNS Manipulation using TLS Certificates
E. Tsai, D. Kumar, R. Sundara Raman, G. Li, Y. Eiger,R. Ensafi
To Appear in: Privacy Enhancing Technologies Symposium (PETS), July 2023
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"All of them claim to be the best": Multi-perspective study of VPN users and VPN providers
R. Ramesh, A. Vyas, R. Ensafi
To appear in: USENIX Security Symposium (USENIX Security), August 2023
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Advancing the Art of Censorship Data Analysis
R. Ramesh, A. Virkud, S. Laplante, V. Fortuna R. Ensafi
Free and Open Communications on the Internet (FOCI) , February 2023
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Network Measurement Methods for Locating and Examining Censorship Devices
R. Sundara Raman, M. Wang, J. Dalek, J. Mayer, R. Ensafi
In: ACM Conference on emerging Networking EXperiments & Technologies (CoNEXT), December 2022
🏆 IRTF Applied Networking Research Prize winner
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TSPU: Russia's Decentralized Censorship System
D. Xue, B. Mixon-Baca, ValdikSS, M. Kallitsis, A. Ablove, B. Kujath, J. Crandall, R. Ensafi
In: Internet Measurement Conference 2022 (IMC ’22), October 2022
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OpenVPN is Open to VPN Fingerprinting
D. Xue, R. Ramesh, A. Jain, M. Kallitsis, A. Halderman, J. R. Crandall, R. Ensafi
In: USENIX Security, August 2022
🏆 Distinguished paper award
🏆 Won First Prize in the 2022 Internet Defense Prize
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A Large-scale Investigation into Geodifferences in Mobile Apps
R. Kumar, A. Virkud, R. Sundara Raman, A. Prakash, R. Ensafi
In: USENIX Security, August 2022
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Investigating the VPN Recommendation Ecosystem
R. Ramesh, A. Huremagic, C. Sharp, R. Ensafi
In: The IEEE SPW 6th Workshop on Technology and Consumer Protection (ConPro'22) , May 2022
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VPNalyzer: Systematic Investigation of the VPN Ecosystem
R. Ramesh, L. Evdokimov, D. Xue, R. Ensafi
In: NDSS, April 2022
🏆 Won First Place at the CSAW '22 Applied Research Competition.
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Throttling Twitter: An Emerging Censorship Technique in Russia
D. Xue, R. Ramesh, ValdikSS, L. Evdokimov, A. Viktorov, A. Jain, E. Wustrow, S. Basso, R. Ensafi
In: ACM IMC, November 2021
🏆 Recognized as the Highest Scoring Short Paper
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Lost in Transmission: Investigating Filtering of COVID-19 Websites
A. Vyas, R. Sundara Raman, N. Ceccio, P. Lutscher, R. Ensafi
In: Financial Cryptography and Data Security (FC), March 2021
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Censored Planet: An Internet-wide, Longitudinal Censorship Observatory
R. Sundara Raman, P. Shenoy, K. Kohls, R. Ensafi
In: ACM CCS, November 2020
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Investigating Large Scale HTTPS Interception in Kazakhstan
R. Sundara Raman, L. Evdokimov, E. Wustrow, A. Halderman, R. Ensafi
In: ACM IMC, October 2020
🏆 Nominated for Best Paper
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Characterizing Transnational Internet Performance and the Great Bottleneck of China
P. Zhu, K. Man, Z. Wang, Z. Qian, R. Ensafi, A. Halderman, H. Duan
In: ACM SIGMETRICS, March 2020
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Measuring and Analysing the Chain of Implicit Trust: A Study of Third-party Resources Loading
M. Ikram, R. Masood, G. Tyson, M. Kaafer, N. Loizon, R. Ensafi
In: ACM Transaction on Privacy and Security (TOPS), March 2020
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Measuring the Deployment of Network Censorship Filters at Global Scale
R. Sundara Raman, A. Stoll, J. Dalek, R. Ramesh, W. Scott, R. Ensafi
In: NDSS, February 2020
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Decentralized Control: A Case Study of Russia
R. Ramesh, R. Sundara Raman, M. Bernhard, V. Ongkowijaya,
L. Evdokimov, A. Edmundson, S. Sprecher, M. Ikram, R. Ensafi
In: NDSS, February 2020
🏆 Finalist at the CSAW '20 Applied Research Competition
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The Chain of Implicit Trust: An Analysis of the Web Third-party Resources Loading
M. Ikram, R. Masood, G. Tyson, M. Kaafer, N. Loizon, R. Ensafi
In: WWW 2019, May 2019
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403 Forbidden: A Global View of CDN Geoblocking
A. McDonald, M. Bernhard, B. VanderSloot, W. Scott, J. A. Halderman, R. Ensafi
In: ACM IMC, November 2018
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Quack: Scalable Remote Measurement of Application-Layer Censorship
B. VanderSloot, A. McDonald, W. Scott, J. A. Halderman, R. Ensafi
In: USENIX Security, August 2018
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Nation-State Hegemony in Internet Routing
A. Edmundson, R. Ensafi, N. Feamster, J. Rexford
In: ACM SIGCAS Conference on Computing and Sustainable Societies, June 2018
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Towards Continual Measurement of Global Network-Level Censorship
P. Pearce, R. Ensafi, F. Li, N. Feamster, V. Paxson
In: IEEE Security & Privacy Magazine, 2018 Special Issue, February 2018
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A Look at Infrastructure Geolocation in Public and Commercial Databases
M. Gharaibeh, A. Shah, B. Huffaker, H. Zhang, R. Ensafi, C. Papadopoulos
In: ACM IMC, November 2017
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Global Measurement of DNS Manipulation
P. Pearce, B. Jones, F. Li, R. Ensafi, N. Feamster, V. Paxson
In: USENIX Security, August 2017
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Global Measurement of DNS Manipulation
P. Pearce, B. Jones, F. Li, R. Ensafi, N. Feamster, V. Paxson
In: USENIX ;login:, Winter 2017 Issue, Winter 2017
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Augur: Internet-Wide Detection of Connectivity Disruptions
P. Pearce*, R. Ensafi*, F. Li, N. Feamster, V. Paxson (* joint first authors)
In: IEEE Symposium on Security and Privacy (Oakland), May 2017
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Identifying and Characterizing Sybils in the Tor Network
P. Winter, R. Ensafi, K. Loesing, N. Feamster
In: USENIX Security Symposium (USENIX Security), August 2016
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A First Look into Transnational Routing Detours
A. Edmundson, R. Ensafi, N. Feamster, J. Rexford
In: Position paper – Poster & Demo Session, 30th ACM SIGCOMM, August 2016
SIGCOMM Student Research Competition winner
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A Case Study of Traffic Demand Response to Broadband Service-Plan Upgrades
S. Grover, R. Ensafi, N. Feamster
In: Passive and Active Measurement Conference (PAM), April 2016
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Examining How the Great Firewall Discovers Hidden Circumvention Servers
R. Ensafi, D. Fifield, P. Winter, N. Feamster, N. Weaver, V. Paxson
In: ACM Internet Measurement Conference (IMC), October 2015
🏆 IRTF Applied Networking Research Prize winner
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An Analysis of China’s Great Cannon
B. Marczak, N. Weaver, J. Dalek, R. Ensafi, D. Fifield, S. McKune, A. Rey, J. Railton, R. Deibert, V. Paxson
In: USENIX Workshop on Free and Open Communications on the Internet (FOCI) and Citizen Lab report, August 2015
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Ethical Concerns for Censorship Measurement
B. Jones, R. Ensafi, N. Feamster, V. Paxson, N. Weaver
In: ACM SIGCOMM Workshop on Ethics in Networked Systems Research (NS Ethics), August 2015
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Analyzing the Great Firewall of China Over Space and Time
R. Ensafi, P. Winter, M. Abdullah, J. Crandall
In: Privacy Enhancing Technologies Symposium (PETS), July 2015
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Detecting Intentional Packet Drops on the Internet via TCP/IP Side Channels
R. Ensafi, J. Knockel, G. Alexander, J. Crandall
In: Passive and Active Measurement Conference (PAM), April 2014
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Global Censorship Detection over the RIPE Atlas Network
C. Anderson, P. Winter, R. Ensafi
In: USENIX Workshop on Free and Open Communications on the Internet (FOCI), August 2014
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A Case Study in Helping Students to Covertly Eat Their Classmates
R. Ensafi, M. Jacobi, J. Crandall
In: USENIX Workshop on Gaming, Games, and Gamification in Security Education (3GSE), August 2014
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Students Who Don’t Understand Information Flow Should Be Eaten: An Experience Paper
R. Ensafi, M. Jacobi, J. Crandall
In: USENIX Workshop on Cyber Security Experimentation and Test (CSET), August 2012
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Idle Port Scanning and Non-interference Analysis of Network Protocol Stacks Using Model Checking
R. Ensafi, J. Park, D. Kapur, J. Crandall
In: USENIX Security Symposium (USENIX Security), August 2010
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Ecology of Malware
J. Crandall, R. Ensafi, S. Forrest, J. Ladau, B. Shebaro
In: New Security Paradigms Workshop (NSPW), September 2008
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