The SPARTA Lab is currently looking for self-motivated students seeking a Ph.D. in Computer Science and interested in pursuing research in topics related to computational social science, online privacy, and Internet measurement. Send an email to "rishab[-]nithyanand[at]uiowa[dot]edu" with the subject "you NEED to hire me!" if you're interested in working with us and have a demonstrably strong background in any of the following areas: computer networking, statistics, text analytics, or experiment design.

Publications

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2023
August 		PDF Glowing in the Dark: Uncovering IPv6 Address Discovery and Scanning Strategies in the Wild.
Hammas Bin Tanveer, Paul Pearce, Rachee Singh, and Rishab Nithyanand.
Proceedings of the 2023 USENIX Security Symposium (USENIX Security 2023).
2022
September 		PDF When Are Cache-Oblivious Algorithms Cache Adaptive? A Case Study of Matrix Multiplication and Sorting.
Arghya Bhattacharya, Helen Xu, Abiyaz Chowdhury, Rezaul Chowdhury, Rathish Das, Rob Johnson, Rishab Nithyanand, and Michael Bender.
Proceedings of the 2022 European Symposium on Algorithms (ESA 2022).
2022
September 		PDF Paying Attention to the Algorithm Behind the Curtain: Bringing Transparency to YouTube's Demonetization Algorithms.
Arun Dunna, Katherine Keith, Ethan Zuckerman, Narseo Vallina-Rodriguez, Brendan O'Connor, and Rishab Nithyanand.
Proceedings of the 2022 ACM Conference on Computer Supported Cooperative Work (ACM CSCW 2022).
2022
September 		PDF Pathways to Radical Misogyny: How Participation, Interaction, and Perception in Online Communities Increase Radical Behavior.
Hussam Habib, Padmini Srinivasan, and Rishab Nithyanand.
Proceedings of the 2022 ACM Conference on Computer Supported Cooperative Work (ACM CSCW 2022).
2022
July 		PDF ATOM: A Generalizable Technique for Inferring Tracker-Advertiser Data Sharing in the Online Behavioral Advertising Ecosystem [Andreas Pfitzmann Award Runner-up].
Maaz Bin Musa and Rishab Nithyanand.
Proceedings of the 2022 Privacy Enhancing Technologies Symposium (PETS 2022).
2022
June 		PDF Exploring the Magnitude and Effects of Media Influence on Reddit.
Hussam Habib and Rishab Nithyanand.
Proceedings of the 2022 International AAAI Conference on Web and Social Media (AAAI ICWSM 2022).
2022
June 		PDF Are Proactive Interventions for Reddit Communities Feasible?.
Hussam Habib, Maaz Bin Musa, Fareed Zaffar, and Rishab Nithyanand.
Proceedings of the 2022 International AAAI Conference on Web and Social Media (AAAI ICWSM 2022).
2022
May 		Relationships Among Vaccination Attitudes, Social Media Use, and Activist vs. Radical Behavior.
Ryan Stoldt, Andrew High, Ashley Peterson, Kathryn Biddle, Raven Maragh-Lloyd, Rishab Nithyanand, Brian Ekdale, Timothy Havens, Hussam Habib, and John Thiede.
Proceedings of the 72nd Annual International Communication Association Conference (ICA 2022).
2020
July 		PDF Inferring Tracker-Advertiser Relationships in the Online Advertising Ecosystem using Header Bidding.
John Cook, Rishab Nithyanand, and Zubair Shafiq.
Proceedings of Privacy Enhancing Technologies Symposium, PETS 2020, July 2020.
2020
April 		PDF Apophanies or Epiphanies? How Crawlers Impact Our Understanding of the Web.
Suleman Ahmad, Daniyal Dar, Narseo Vallina-Rodriguez, Fareed Zaffar, and Rishab Nithyanand.
Proceedings of The Web Conference, WWW 2020, April 2020.
2020
March 		PDF Extortion or Expansion? An investigation into the costs and consequences of ICANN's gTLD experiments.
Shahrooz Pouryousef, Daniyal Dar, Suleman Ahmad, Phillipa Gill, and Rishab Nithyanand.
Proceedings of the Passive and Active Measurement Conference, PAM 2020, March 2020.
2018
July 		Characterizing the Nature and Dynamics of Tor Exit Blocking.
Rachee Singh, Rishab Nithyanand, Sadia Afroz, Paul Pearce, Michael Carl Tschantz, Phillipa Gill, and Vern Paxson.
Proceedings of the Applied Networking Research Workshop, ANRW 2018, Montreal, QC, Canada, July 16-16, 2018.
2018
February 		PDF Apps, Trackers, Privacy, and Regulators: A Global Study of the Mobile Tracking Ecosystem.
Abbas Razaghpanah, Rishab Nithyanand, Narseo Vallina{-}Rodriguez, Srikanth Sundaresan, Mark Allman, Christian Kreibich, and Phillipa Gill.
25th Annual Network and Distributed System Security Symposium, NDSS 2018, San Diego, California, USA, February 18-21, 2018.
2017
December 		PDF A Churn for the Better: Localizing Censorship using Network-level Path Churn and Network Tomography.
Shinyoung Cho, Rishab Nithyanand, Abbas Razaghpanah, and Phillipa Gill.
Proceedings of the 13th International Conference on emerging Networking EXperiments and Technologies, CoNEXT 2017, Incheon, Republic of Korea, December 12 - 15, 2017.
2017
November 		PDF Online Political Discourse in the Trump Era.
Rishab Nithyanand, Brian Schaffner, and Phillipa Gill.
CoRR.
2017
August 		PDF Measuring Offensive Speech in Online Political Discourse.
Rishab Nithyanand, Brian Schaffner, and Phillipa Gill.
7th USENIX Workshop on Free and Open Communications on the Internet, FOCI 2017, Vancouver, BC, Canada, August 14, 2017..
2017
August 		PDF Characterizing the Nature and Dynamics of Tor Exit Blocking.
Rachee Singh, Rishab Nithyanand, Sadia Afroz, Paul Pearce, Michael Carl Tschantz, Phillipa Gill, and Vern Paxson.
26th USENIX Security Symposium, USENIX Security 2017, Vancouver, BC, Canada, August 16-18, 2017..
2016
December 		PDF The Adblocking Tug-of-War.
Hamed Haddadi, Rishab Nithyanand, Sheharbano Khattak, Mobin Javed, Narseo Vallina{-}Rodriguez, Marjan Falahrastegar, Julia E. Powles, Emiliano De Cristofaro, and Steven J. Murdoch.
;login: 41(4).
2016
August 		PDF Adblocking and Counter Blocking: A Slice of the Arms Race.
Rishab Nithyanand, Sheharbano Khattak, Mobin Javed, Narseo Vallina{-}Rodriguez, Marjan Falahrastegar, Julia E. Powles, Emiliano De Cristofaro, Hamed Haddadi, and Steven J. Murdoch.
6th USENIX Workshop on Free and Open Communications on the Internet, FOCI '16, Austin, TX, USA, August 8, 2016..
2016
June 		PDF Exploring the Design Space of Longitudinal Censorship Measurement Platforms.
Abbas Razaghpanah, Anke Li, Arturo Filast{\`{o}}, Rishab Nithyanand, Vasilis Ververis, Will Scott, and Phillipa Gill.
CoRR.
2016
May 		PDF Holding all the ASes: Identifying and Circumventing the Pitfalls of AS-aware Tor Client Design.
Rishab Nithyanand, Rachee Singh, Shinyoung Cho, and Phillipa Gill.
CoRR.
2016
February 		PDF Games without Frontiers: Investigating Video Games as a Covert Channel.
Bridger Hahn, Rishab Nithyanand, Phillipa Gill, and Rob Johnson.
IEEE European Symposium on Security and Privacy, EuroS\&P 2016, Saarbr\"ucken, Germany, March 21-24, 2016.
2016
February 		PDF Measuring and Mitigating AS-level Adversaries Against Tor.
Rishab Nithyanand, Oleksii Starov, Phillipa Gill, Adva Zair, and Michael Schapira.
23rd Annual Network and Distributed System Security Symposium, NDSS 2016, San Diego, California, USA, February 21-24, 2016.
2014
November 		A Systematic Approach to Developing and Evaluating Website Fingerprinting Defenses.
Xiang Cai, Rishab Nithyanand, Tao Wang, Rob Johnson, and Ian Goldberg.
Proceedings of the 2014 ACM SIGSAC Conference on Computer and Communications Security, Scottsdale, AZ, USA, November 3-7, 2014.
2014
November 		PDF CS-BuFLO: A Congestion Sensitive Website Fingerprinting Defense.
Xiang Cai, Rishab Nithyanand, and Rob Johnson.
Proceedings of the 13th Workshop on Privacy in the Electronic Society, WPES 2014, Scottsdale, AZ, USA, November 3, 2014.
2014
November 		PDF Glove: A Bespoke Website Fingerprinting Defense.
Rishab Nithyanand, Xiang Cai, and Rob Johnson.
Proceedings of the 13th Workshop on Privacy in the Electronic Society, WPES 2014, Scottsdale, AZ, USA, November 3, 2014.
2014
August 		PDF Effective Attacks and Provable Defenses for Website Fingerprinting.
Tao Wang, Xiang Cai, Rishab Nithyanand, Rob Johnson, and Ian Goldberg.
Proceedings of the 23rd USENIX Security Symposium, San Diego, CA, USA, August 20-22, 2014..
2014
January 		PDF How Best to Handle a Dicey Situation.
Rishab Nithyanand, Jonathan Toohill, and Rob Johnson.
CoRR.
2013
November 		PDF The password allocation problem: strategies for reusing passwords effectively.
Rishab Nithyanand and Rob Johnson.
Proceedings of the 12th annual ACM Workshop on Privacy in the Electronic Society, WPES 2013, Berlin, Germany, November 4, 2013.
2013
October 		Can Jannie verify? Usability of display-equipped RFID tags for security purposes.
Alfred Kobsa, Rishab Nithyanand, Gene Tsudik, and Ersin Uzun.
Journal of Computer Security 21(3).
2012
May 		PDF A Theoretical Analysis: Physical Unclonable Functions and the Software Protection Problem.
Rishab Nithyanand and John Solis.
2012 IEEE Symposium on Security and Privacy Workshops, San Francisco, CA, USA, May 24-25, 2012.
2011
December 		User-aided reader revocation in PKI-based RFID systems.
Rishab Nithyanand, Gene Tsudik, and Ersin Uzun.
Journal of Computer Security 19(6).
2011
September 		PDF Usability of Display-Equipped RFID Tags for Security Purposes.
Alfred Kobsa, Rishab Nithyanand, Gene Tsudik, and Ersin Uzun.
Computer Security - ESORICS 2011 - 16th European Symposium on Research in Computer Security, Leuven, Belgium, September 12-14, 2011. Proceedings.
2010
September 		PDF Readers Behaving Badly - Reader Revocation in PKI-Based RFID Systems.
Rishab Nithyanand, Gene Tsudik, and Ersin Uzun.
Computer Security - ESORICS 2010, 15th European Symposium on Research in Computer Security, Athens, Greece, September 20-22, 2010. Proceedings.
2010
September 		PDF Groupthink: usability of secure group association for wireless devices.
Rishab Nithyanand, Nitesh Saxena, Gene Tsudik, and Ersin Uzun.
UbiComp 2010: Ubiquitous Computing, 12th International Conference, UbiComp 2010, Copenhagen, Denmark, September 26-29, 2010, Proceedings.

Department of Computer Science at the University of Iowa