Dr Steven J. Murdoch

Photo of Steven J. Murdoch
[ Portrait photographer Roland Eva | More photos ]

I am a Principal Research Fellow in the Information Security Research Group of the Department of Computer Science at University College London. I am also a visiting researcher in the Security Group of the University of Cambridge, based in the Computer Laboratory, a bye-fellow of Christ's College, Security Architect at the VASCO Innovation Center, Cambridge, and a member of the Tor Project.

Some of my writings can be found on the Security Group blog: Light Blue Touchpaper.

Cambridge students may be interested in my Part II project proposals.

Tweets by @sjmurdoch

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News and Updates Subscribe to site updates feed

10 October 2014
Added new paper, published in IET Electronics Letters: “Optimising node selection probabilities in multi-hop M/D/1 queuing networks to reduce latency of Tor”.

29 August 2014
Added slides for my invited lecture at University College London: “Online Payment Methods”.

31 July 2014
Added edited volumes: Privacy Enhancing Technologies 2014 and Internet Censorship and Control.

30 July 2014
Added panel session with audio from Royal Society Summer Science Exhibition – “Privacy with technology: where do we go from here?”.

28 July 2014
Added video for my keynote at OWASP AppSec EU 2014 – “Anonymous Communications and Tor: History and Future Challenges”.

[ older news ]


Professional activities

Research supervision

Kumar Sharad (PhD student): security in social networks – anonymisation and fraud prevention.

Sheharbano Khattak (Research Assistant & PhD student): measurement of censorship and censorship resistance systems.

Program chair

14th Privacy Enhancing Technologies Symposium, 16–18 July, 2014, Amsterdam, Netherlands.

General chair

Financial Cryptography 2011

Financial Cryptography and Data Security '11, 15th International Conference, 28 February–4 March 2011, St. Lucia. Organized by the International Financial Cryptography Association.

Previous programme committee membership

European Symposium on Research in Computer Security (ESORICS) 2011

ACM Conference on Computer and Communications Security: 2007, 2008, 2010, 2011.

Privacy Enhancing Technologies Symposium (PETS): 2007, 2008, 2009, 2011.

Financial Cryptography and Data Security (FC): 2010.

Workshop on Privacy in the Electronic Society (WPES): 2006, 2007, 2009.

ACM Symposium on Applied Computing (Computer Security track): 2007.

Workshop on Foundations of Security and Privacy (FCS-PrivMod): 2010.

FIDIS/IFIP Internet Security & Privacy Summer School: 2008.

Journal reviewing

Includes IEEE Transactions on Dependable and Secure Computing (2009), ACM Transactions on Information and System Security (2008), IEEE Transactions on Software Engineering (2008), IEEE/ACM Transactions on Networking (2007), IEEE Security & Privacy (2007), The Triple Helix (2008), Identity in the Information Society (2008).


For information on my availability for consultancy or expert witness work, please contact me.

Research interests


Currently, my most active research topics are on anonymous communications (specifically the Tor Project) and banking security. For other activities, see my project list.

Recent publications

A full list of my papers can be found on the publications page.

Recent talks

A full list of my talks can be found on the talks page. Talks accompanying papers can be found in the publications section.


Contact Details

email (preferred):

s.murdoch at ucl.ac.uk


Dr Steven J. Murdoch
Computer Science Department
University College London
Gower Street
United Kingdom


+44 1223 763566 (Cambridge) or +44 20 3108 1629 (UCL)


+44 7866 807 628

Last modified 2015-02-06 16:39:05 +0000

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Note for search engines: My name is commonly misspelt as Steve Murdoch, Steve J. Murdoch, Stephen Murdoch, Stephen J. Murdoch, even sjm217 and sjmurdoch. I haven't seen anyone try 9803674m or murdocsj, which were my identifiers at the University of Glasgow, but in principle they might.