Publications

• “Evading censorship with browser-based proxies.” David Fifield, Nate Hardison, Jonathan Ellithorpe, Emily Stark, Dan Boneh, Roger Dingledine, and Phil Porras. Proceedings of PETS 2012. [PDF]
• “OSS: Using Online Scanning Services for Censorship Circumvention.” David Fifield, Gabi Nakibly, and Dan Boneh. Proceedings of PETS 2013. [PDF]
• “Fingerprinting web users through font metrics.” David Fifield and Serge Egelman. Proceedings of Financial Cryptography and Data Security 2015. [PDF]
• “Blocking-resistant communication through domain fronting.” David Fifield, Chang Lan, Rod Hynes, Percy Wegmann, and Vern Paxson. Proceedings of PETS 2015. Winner of the Andreas Pfitzmann Best Student Paper Award. [HTML] [PDF]
• “Remote Operating System Classification over IPv6.” David Fifield, Alexandru Geana, Luis MartinGarcia, Mathias Morbitzer, J. D. Tygar (alphabetical authorship). Proceedings of AISec 2015. [PDF]
• “Examining How the Great Firewall Discovers Hidden Circumvention Servers.” Roya Ensafi, David Fifield, Philipp Winter, Nick Feamster, Nicholas Weaver, and Vern Paxson. Proceedings of IMC 2015. [Project page] [PDF]
• “Do You See What I See? Differential Treatment of Anonymous Users.” Sheharbano Khattak, David Fifield, Sadia Afroz, Mobin Javed, Srikanth Sundaresan, Vern Paxson, Steven J. Murdoch, and Damon McCoy. Proceedings of NDSS 2016. [PDF] [Data]
• “Censors’ Delay in Blocking Circumvention Proxies.” David Fifield and Lynn Tsai (alphabetical authorship). Proceedings of FOCI 2016. [Project page] [PDF]
• “A Usability Evaluation of Tor Launcher.” Linda Lee, David Fifield, Nathan Malkin, Ganesh Iyer, Serge Egelman, and David Wagner. Proceedings of PETS 2017. [PDF]
• “A better zip bomb.” David Fifield. Winner of the Best Paper award. Proceedings of WOOT 2019. [HTML] [PDF] [talk]
• “Turbo Tunnel, a good way to design censorship circumvention protocols.” David Fifield. Proceedings of FOCI 2020. [HTML] [PDF]

Non-peer-reviewed

• “Zenmap GUI Users’ Guide.” Chapter in the book Nmap Network Scanning.
• “Unsupervised authorship attribution.” David Fifield, Torbjørn Follan, Emil Lunde. March 26, 2015. [arXiv] [PDF]
• “SNI proxies.” David Fifield, Jiang Jian, and Paul Pearce. December 19, 2016. [HTML]
• “How China Detects and Blocks Shadowsocks.” Anonymous, Anonymous, Anonymous, David Fifield, and Amir Houmansadr. December 19, 2019. [HTML]
• “Exposing and Circumventing China's Censorship of ESNI.” Kevin Bock, iyouport, Anonymous, Louis-Henri Merino, David Fifield, Amir Houmansadr, and Dave Levin. August 7, 2020. [HTML]

Education

• Doctor of Philosopy in computer science. University of California, Berkeley. December 2017. Thesis: Threat modeling and circumvention of Internet censorship.
• Master of Science in theoretical computer science. Stanford University. April 2013.
• Bachelor of Science in computer science and mathematics. Metropolitan State College of Denver. December 2007.

Projects

• Nmap. 2007–2014. Co-maintainer and a primary developer of the security scanning program. Developer and inventor of various network scanning enhancements. Manager of interns over five instances of Google Summer of Code.
• The Tor Project. Since 2011. Creator of the flash proxy and meek censorship circumvention systems, developer for Snowflake. Maintainer of goptlib, a library for implementing pluggable transports.
• SEDES, metrical position in Greek hexameter. Since 2015.

Service

2017–: Managing the net4people/bbs forum for discussion of censorship circmvention.

Languages