Welcome to my personal academic website

I am the Lecturer in Networks and Security at the School of IT at the University of Sydney. I also lead the Node for Cybersecurity and Usable Security inside the Human-Centred Technologies cluster.

One of my goals is to make the Sydney area a great place to do R&D in IT Security. To this end, I am also Contributed Staff to Data61|CSIRO, a Visiting Fellow at the University of New South Wales, and a member of the Sydney Cybersecurity Network.

Research Interests

My research interests revolve around security and (network) measurement, with a decidedly empirical approach. My current interests are:

  • Global-scale measurement of Internet service deployments and their security
  • Data-driven security mechanisms
  • Analysis of blockchain technology and its implications

My theme is real-world security: security is achieved only by technology that supports its human users. No matter how brilliant the technology, if humans find it hard to operate, it will be insecure. Similarly, technology is always used in a context (at home, in finance, etc.) and this context is important in understanding how a technology must designed.


I hold a PhD from Technical University of Munich. I did both my post-grad and under-grad studies at Eberhard Karls University, Tuebingen, one of Germany’s classic universities.

I also am a Visiting Lecturer at the University of New South Wales and a Visiting Academic at Technical University of Munich. As contributed university staff, I frequently collaborate with Data61 (CSIRO), Australia’s premier innovation group.

My full CV can be found here.


I am teaching the following units in S2 2016:

Please note that INFO5010 will be COMP5617 from 2017 and included in the new Major of IT Security.

Students & Advising

I am currently an advisor to the following students, working on a range of topics:

  • Luke Anderson (PhD student, with Alan Fekete) - blockchains
  • Rabia Chaudry (PhD student, with Alan Fekete) - performance of cloud technology
  • Jiaan Guo (Bachelor Honours) - Internet routing security
  • Jakob Bachhuber (Visiting Master’s student, TUM) - Internet scanning
  • Benjamin Brent (SSP project) - Internet scanning

Prospective PhD students

If you want to do a PhD with me, please contact me several months before the application deadline and take the time to find out what I am doing before proposing a research topic. I always have one or two ideas that can be turned into fruitful PhD topics. In general, PhD students at USyd are expected to be competitive for a scholarship. Some topics can be done in collaboration with Data61 - these come with an extra top-up scholarship.

Prospective honours students / research theses

I offer a range of topics in the general area of security and network security. Some open topics can be found here, but it’s always a good idea to approach me as these change from time to time.

Taste of Research

I offer topics for both USyd and UNSW students within Data61’s Taste of Research program, which comes with a summer scholarship. If you are interested in one of those, please contact your school’s student office for application dates.

Selected publications

All publications