Older News (latest is here)
- 8/25/15 I am starting a two-year term as Associate Editor for CCR. Keep those excellent submissions coming!
- 8/15/15 I was awarded a Google Research Award for my work on identifying traffic differentiation. Many thanks to Google for their support!
- 7/23/15 Our research group at NEU has a whopping 7 papers appearing at IMC (1/6 of the program)! I am involved in three of the papers: "Identifying Traffic Differentiation in Mobile Networks" (with Stony Brook), "On SSL Certificate Revocation: The Race to the Bottom in Securing the Web's PKI" (with U of Maryland, Duke, and Stanford), and "Investigating Interdomain Routing Policies in the Wild" (with Stony Brook, UFMG, and USC). Congrats to all of our collaborators, and particularly to the students who did all the hard work! More details to come when the camera ready versions are available.
- 6/12/15 Our ReCon project (part of Meddle) was awarded a grant from the Data Transparency Lab! We are very grateful to
the DTL board for their generous support.
- 6/4/15 Our Differentiation Detector app for determining if your mobile carrier is violating net neutrality and shaping your traffic is now live
in the Google Play Store. (CACM article, NEU article)
- 6/3/15 I gave a talk at IBM Haifa about Herd, our anonymous VoIP solution. Many thanks to Gil Zussman for organizing the event, to Michael Schapira and Danny Dolev at Hebrew Univeristy for making it possible for me to attend!
- 5/21/15 Shichang Xu won a best poster award at MobiSys 2015 for our work on Context-Triggered Mobile Measurement!
- 4/24/15 My work on practical, anonymous VoIP communication with Stevens Le Blond, Peter Druschel, William Caldwell, and Nicholas Merritt was accepted to SIGCOMM 2015!
- 2/21/15 My work on Mobilyzer (project page) with Ashkan Nikravesh, Hongyi Yao, Shichang Xu, and Z. Morley Mao was accepted to MobiSys 2015!
- 11/4/14 UPDATE: Video from the event! I am co-organizing the first annual New England Networking and Systems Day, to be held at Boston University on October 24th. If you are a networking and systems researcher or practitioner in the area, please consider submitting an abstract for a lightning talk. All are welcome to attend, even if you don't have a talk!
- 9/10/14My work with Arnau Gavalda, Jordi Duch, et al. has been accepted to PNAS! The article is titled "Impact of heterogeneity and socio-economic factors on individual behavior in decentralized sharing ecosystems," and it shows (among many things) how BitTorrent users are "specialists" in terms of what they download, and specialists vary by region and GDP.
- 8/20/14 Arash Molavi and Abbas Razaghpanah took second prize in the SIGCOMM Student Research Competition for their work on identifying traffic differentiation on cellular data traffic. Congrats!
- 7/25/14 Our paper on SSL reissue and revocation behavior in the wake of Heartbleed has been accepted to IMC. Congrats to Liang and the other authors!
- 2/9/14 I'll be serving on the CoNEXT and IMC PCs for 2014. Looking forward to seeing some great submissions!
- 11/25/13 Meddle is live and open to external users. If you want device-wide ad-blocking for your phone and want to see how trackers are tracking you and your device, sign up here: http://www.meddle.mobi/.
- 11/24/13 I'm happy to report that two papers have been accepted to the Passive and Active Measurement (PAM) Conference, both on the topic of measuring and understanding performance in mobile networks. These were joint work with University of Michigan, USC and Google.
- 10/25/13 My work on privacy (with Stevens Le Blond of MPI) was mentioned in the MIT Technology Review.
- 9/30/13 I was awarded an NSF NeTS grant (co-PI with Arvind Krishnamurthy) to explore
automated diagnosis and repair of Internet problems. Thanks NSF!
- I'm happy to announce that my coauthors and I will have 2 papers in
One paper is about identifying the
origins of BGP path changes -- with Umar Javed, Italo Cunha, Ethan
Katz-Bassett, Arvind Krishnamurthy and Tom Anderson.
The other is about an efficient anonymity network that is
resilient to traffic analysis -- with Stevens Le Blond, Wenxuan Zhou,
Hitesh Ballani, Peter Druschel and Paul Francis.
- Ethan Katz-Bassett and I were awarded an M-Lab Network Research
Grant for investigating the origins of the mobile Internet
performance. Thanks M-Lab!
- My fantastic collaborator, Ashwin Rao, was
awarded one of 8 best paper awards at the CoNEXT '12 Student Workshop
Middleboxes for Increased Transparency and Control of Mobile Traffic
- I'll be a poster/demo chair for SIGCOMM 2014 in Chicago!
- I'll be serving on the TPC for the CoNEXT '13 Student Workshop. This is a great venue for early
feedback (see below).
- Our work on automatic avoidance of network problems has been
accepted to HotNets 2011.
- Web browsing is leaking all kinds of personal information. As a
first step toward addressing this, we've released Piigeon, a browser extension that
informs users of Web login safety before you submit credentials.
Please help us by beta
testing and giving feedback!
- Our work on the network impact of a large distributed system has
been accepted for publication in SIGCOMM 2011!
- Our work on privacy revelations for Web and mobile apps will appear
in HotOS 2011.
- I gave a talk about my current work at the AIMS workshop, on
the topic of fault
isolation in the wide area.
- I've been named a 2010 Computing
Innovation Fellow, which will support my postdoc work at the
University of Washington.
- I will be serving as a PC member for ACM MM 2011, in the area of
"Media transport and sharing".
- I will be serving as a PC member on the SIGCOMM 2011 Workshop
on Measurements "Up the Stack" (W-MUST).
- I gave a talk on Crowdsouring Network Event Detection (what I like
to call "Using the Crowd to Monitor the Cloud") at SIGCOMM 2010 in New
Delhi, India. Slides from the presentation are here.
- I was awarded the 2009/2010 Outstanding Disseration Award
from the Northwestern EECS department in June, 2010.
- Fabian hooded me on June 18th, finally ensuring that my username
(drchoffnes) is read correctly both as my title and as my first two
initials + last name.
- My thesis work (crowdsourcing
network event detection) was accepted to SIGCOMM 2010. See this
link for details.
- Our work on detecting
communities in BitTorrent has been accepted to IPTPS 2010.
- A revised version of our tech report on pitfalls
for testbed evaluations of Internet systems has been accepted for
the April issue of SIGCOMM CCR. One of the key findings is that our
current testbeds and public measurement vantage points are woefully
inadequate for inferring properties of a large, Internet scale system
such as BitTorrent. A more comprehensive study of this issue is under
- I passed my dissertation defense on February 15th! Slides from the
talk are here.
- I gave a talk about EdgeScope
at the AIMS
workshop on February 7th. I also briefly presented my