Dr. Mashael Al-Sabah | Hamad Bin Khalifa University
Hamad Bin Khalifa University


Dr. Mashael Al-Sabah

Dr. Mashael Al-Sabah

Senior Scientist
Qatar Computing Research Institute

  • Phone4 542 257
  • Office locationA148


Dr. Mashael Al-Sabah is a Senior Scientist at the Qatar Computing Research Institute. Before that, Dr. Al-Sabah was an Assistant Professor at the computer science and engineering department at Qatar University. Her research interests lie in the areas of network security and privacy enhancing technologies, cryptocurrency, and blockchain technology. She has published papers that were featured in various magazines such as Wired and New Scientist, and was awarded the Education Excellence Day Platinum Award for PhD holders in Qatar in 2014. Dr. Al-Sabah obtained her PhD from the University of Waterloo, Canada in 2013 and later spent 16 months at MIT as a visiting scientist.



Research Interests

  • Network Security
  • Privacy Enhancing Technologies
  • Cryptocurrency
  • Blockchain


Senior Scientist

QCRI (cyber security)

May 2019 - present
  • Scientist

    QCRI (cyber security)

    Mar 2018 - May 2019
  • Assistant Prof

    Qatar University (Computer science and engineering department)

    Sept 2013 - Feb 2018
  • Lecturer

    Qatar University (Computer science and engineering department)

    2007 - 2013
  • Teaching Assistant

    Qatar University (Computer science and engineering department)

    2005 - 2007


Visiting Scientist at CSAIL

Massachusetts Institute of Technology (MIT), Cambridge, MA, USA

March 2014 - June 2015
  • Ph.D. ("Dissertation Title: \Network Performance Improvements for Low-Latency Anonymity Networks")

    University of Waterloo, Waterloo, ON, Canada

    June 2013
  • M.A.Sc., Computer Networks

    Ryerson University, Toronto, ON, Canada

    May 2007
  • B.S., Computer Science

    American University in Cairo, Egypt

    June 2004

Selected Publications

  • Yazan Boshmaf, Husam AlJawaheri, and Mashael AlSabah. BlockTag: Design and Applications of a Tagging System for Blockchain Analysis.

    Accepted to appear in 34th International Conference on ICT Systems Security and Privacy Protection,

    June 2019
  • Mashael AlSabah, Ryan Riley, and Gabriele Olegeri. Your Culture is in Your Password: An Analysis of a Demographically-diverse Password Dataset.

    Elsevier Computers and Security,

    April 2018
  • Mashael Al-Sabah, Alin Tomescu, Ilia Lebedev, Dimitrios Serpanos, and Srini Devadas. PrivIPK: Certicateless and Secure Email Communication.

    Elsevier Computers and Security,

    April 2017
  • Mashael Al-Sabah, and Ian Goldberg. Performance and Security Improvements for Tor: A Survey. ACM Computing Surveys (CSUR)

    Impact: CSUR has a high impact factor. An earlier version of this paper has been used as assigned reading in a Computer Security course at University of California, Berkeley

    September 2016
  • Albert Kwon, Mashael Al-Sabah (joint first author), David Lazar, Srini Devadas, and Marc Dacier. Circuit Fingerprinting Attacks: Passive Deanonymization of Tor Hidden Services.

    24th USENIX Security Symposium, August 2015. [Impact: This paper received significant media attention, and was featured in more 15 news articles. This paper has also been used as an assigned reading in various computer security courses in various leading universities such as John Hopkins University, University of Waterloo, and University of California, Berkeley]

    August 2015
  • Mashael Al-Sabah, and Ian Goldberg. PCTCP: Per-Circuit TCP-over-IPSec Transport for Anonymous Communication Overlay Networks.

    20th ACM Conference on Computer and Communications Security,

    November 2013
  • Mashael Al-Sabah, Kevin Bauer, Tariq Elahi, and Ian Goldberg. The Path Less Travelled: Overcoming Tor's Bottlenecks with Traffic Splitting.

    13th Privacy Enhancing Technologies Symposium, July 2013. [Impact: This paper received Andreas Ptzmann Best Student Paper Award at the Privacy Enhancing Technologies Symposium, 2013.]

  • Mashael Al-Sabah, Kevin Bauer, and Ian Goldberg. Enhancing Tor's Performance using Real-time Traffic Classification.

    19th ACM Conference on Computer and Communications Security, October 2012.

    October 2012
  • Tariq Elahi, Kevin Bauer, Mashael Al-Sabah and Ian Goldberg. Changing of the Guards: A Framework for Understanding and Improving Entry Guard Selection in Tor.

    11th ACM Workshop on Privacy in the Electronic Society,

    October 2012
  • Mashael Al-Sabah, Kevin Bauer, Ian Goldberg, Dirk Grunwald, Damon McCoy, Stefan Savage, and Geoffrey Voelker.

    DefenestraTor: Throwing Out Windows in Tor. 11th Privacy Enhancing Technologies Symposium, July 2011.

    July 2011
  • Gabriele Lau, Mashael AlSabah, Muhammed Jaseemuddin, Nejad Bhuiyan.

    Conextaware RAON Middleware for Opportunistic Networks. Elsevier Pervasive and Mobile Computing,

    July 2017