I am an assistant professor in the Khoury College of Computer Sciences at Northeastern University (2013--present), and a founding member of Northeastern's Cybersecurity and Privacy Institute.
My research is primarily in the areas of distributed systems and
networking, with a recent focus on privacy, security, transparency, and mobile systems.
I am a recipient of the NSF CAREER award, the ACM/CRA Computing Innovation Fellowship, and the Outstanding Dissertation Award in EECS at Northwestern University.
Outcomes of my research have been covered by the popular press including the New York Times, CBS News, PBS, NPR, the Boston Globe, NBC News, WIRED, Vice News, and Science Magazine, and my research has been supported by the National Science Foundation, Department of Homeland Security, Measurement Lab, Google Research, Comcast, Verizon, ARCEP, and the Data Transparency Lab.
Before joining Northeastern, I was a postdoctoral research associate in Tom Anderson's
group at the University of
Washington. This work has been generously funded by the CI Fellows program.
I earned my PhD in Computer Science from Northwestern University in
June, 2010, where I was awarded two Cabell Fellowships and 2009/2010
Outstanding Dissertation in EECS. Prior to that, I graduated from Amherst College, magna cum
laude, in 2002 with a double-major in Physics and French. Since the
job market for francophone physicists dried up, I was left with no
choice but to pursue a career in the textbook-authorship business with
Deitel & Associates. In two
years, I worked on three books, two of which I coauthored. After that,
I decided it was time for me to stop writing about others' work and
start making my own to write about. Fortunately, Fabián saw
fit to entertain this notion.
Also available as a PDF.
Tel. [on request only]
E-mail: choffnes *at* ccs <dot> neu <dot> eduPGP key
My research interests are broadly in the areas of networking,
distributed systems, and mobile computing. My recent focus is
improving the performance and reliability of Internet and mobile
systems. Please see my research statement
and publications list for details.
- Northeastern University, Boston, MA, USA
Assistant Professor, 2013-present
- University of Washington, Seattle, WA, USA
Research Associate, 2010-2013
Mentor: Tom Anderson
- Northwestern University, Evanston, IL, USA
Computer Science December, 2006
Ph.D. in Computer Science. June,
slides, Dissertation document
- Amherst College, Amherst, MA, USA
B.A. in Physics &
French, May, 2002
- NSF/CRA Computing Innovations Fellowship, 2010-2012.
- EECS Outstanding Dissertation Award, Northwestern University,
- Terminal Year Cabell Fellowship, Northwestern University,
- Honorable Mention, NSF Graduate Research Fellowship, April 2005.
- Cabell Fellowship, Northwestern University, Sept 2004.
- Magna cum laude, Amherst College, May 2002.
Selected Publications (full list)
- Jingjing Ren, Ashwin Rao, Martina Lindorfer, Arnaud Legout, David Choffnes. ReCon: Revealing and Controlling PII Leaks in Mobile Network Traffic.
In Proceedings of MobiSys (MobiSys '16), Singapore, June 2016.
- Arash Molavi Kakhki, Abbas Razaghpanah, Hyungjoon Koo, Anke Li, Rajeshkumar Golani, David Choffnes, Phillipa Gill, and Alan Mislove. Identifying Traffic Differentiation in Mobile Networks.
In Proceedings of the 15th ACM Internet Measurement Conference (IMC'15), Tokyo, Japan, October 2015.
- Stevens Le Blond, David Choffnes, William Caldwell, Peter Druschel, Nicholas Merritt. Herd: A Scalable, Traffic Analysis Resistant Anonymity
Network for VoIP Systems. In Proceedings of SIGCOMM (SIGCOMM '15). August 2015. (PDF)
Selected Projects and Software Releases (full list)
Platform for providing users with transparency and
control over the network traffic generated by their mobile devices.
System for detecting net neutrality violations from an app on your phone.
Plugin for the Vuze (Azureus) BitTorrent client that
uses CDN-based measurements to improve performance and reduce P2P
impact on ISPs. Currently