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Dr Theo Tryfonas

Dr Theo Tryfonas

Dr Theo Tryfonas
PhD(Athens), FRSA

Associate Professor

Area of research

Smart Cities, Internet of Things, Cybersecurity, Systems Engineering

Office 2.22
Queen's Building,
University Walk, Clifton BS8 1TR
(See a map)

+44 (0) 117 331 5740


I work in the fields of smart cities, Internet of Things (IoT), cybersecurity and systems engineering. My work in smart cities includes deployment of energy efficient wireless sensor networks, design of secure and resilient IoT applications, privacy in mobile computing, open data architectures for smart buildings, integration of industrial control systems and SCADA with the IoT etc. In general I am interested in how these technologies can be used to deliver a more sustainable future – both in terms of resource efficiency, resilience and of operational improvement.

My research in cybersecurity includes applying Systems techniques for information risk management, such as system dynamics and viable system modelling, network analytics and game theory. I have also worked on digital forensics techniques, looking at the extraction and analysis of digital evidence, particularly from emerging technologies such as mobile phones, wireless sensor networks and social media. In addition, I have provided evidence in court as Expert Witness on a number of cases.


I am Associate Professor of Smart Cities & Urban Innovation with a background in systems engineering, cybersecurity and software development. I teach across our undergraduate programmes of Engineering Design and Civil Engineering and the MSc Computer Science.

In the past I worked in industry as a programmer (Ulysses Systems), consultant and auditor (Ernst & Young) and after becoming an academic I provided on occasion expert witness advice, continuing professional development courses etc. My work has been focused on a diverse range of sectors including transportation, utilities, healthcare and government. I have worked in particular on aspects of maritime safety and port security, public transport resilience, UAV protection, telecom revenue and system assurance, as well as contributed to investigations of computer-assisted crime.

I graduated with a BSc in Computer Science from the University of Crete in Greece. I then moved to Athens to complete my postgraduate studies, first at master's (MSc Information Systems) and then at doctoral level (PhD Informatics). My PhD was sponsored by Ernst & Young, one of the "Big Four" global assurance and advisory firms. I'm a Felow of the Royal Society of Arts and a Chartered Professional Member of the Chartered Institute for IT (MBCS CITP).

In my spare time I enjoy spending quality time with my daughter Chrissa-Sophia, my son Gabriel and my wife Catherine. I am an amateur runner and I also like watching sport, mainly rugby but also cricket, american football and MMA. And for some random reason I am fascinated by church architecture.


I currently teach Smart Cities, an introduction of final year Civil and other Engineers to the capabilities of tech in the context of urbanisation in future cities, as well as Computing 1, which is an introduction to coding in MATLAB for Civil Engineers. In the past I have taught on a diverse range of subjects across the Faculty of Engineering. I developed and taught for some years the unit of Systems Security, a postgraduate unit in Computer Science, serving as a broad introduction to computer security. Systems Engineering was part of the EngD in Systems programme looking at how we build, deliver and control complex and usually large-scale engineering systems - anything from computer applications to bridges and space rockets.


  • Smart Cities
  • Internet of Things
  • Cybersecurity
  • Systems Engineering

Selected publications

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View complete publications list in the University of Bristol publications system


Dr Tryfonas currently teaches 3 courses:

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