Dr. George Loukas

Main menu:

I am carrying out research on cyber and physical security technologies, as well as in the area where the two overlap.

Summary of research

Cyber-Physical Security of semi-autonomous vehicles

A cyber-physical system is vulnerable in both the cyber and physical space and especially where the two overlap, as a cyber-attack may cause it to initiate the wrong physical action, inconsistent with system states and goals. Our current research aims to equip cyber-physical systems with early warning of cyber threats, analogous to the sensation of "something is wrong" that humans experience when they enter an environment with real or perceived threats that are not immediately identifiable.

Defence against Denial of Service Attacks

Motivated by an impressive variety of reasons and directed against an equally impressive variety of targets, DoS attacks are more difficult to defend than to launch. Recognising the fact that the networks of the near future will feature self-awareness and online interaction with the users, we have developed novel techniques to improve the DoS resilience of such networks. These include impact prediction, detection based on the random neural network, and priority-based response.

Cyber threats in Law Enforcement and Emergency Management

Law enforcement agencies, emergency planners, first responders and relief workers increasingly rely on computational and communication systems that support all aspects of emergency management, from mitigation and preparedness to response and recovery. Our research focuses on the cyber threats that can lead to critical situations by impeding the work of law enforcement and emergency services, including but not limited to their social network-based communication with the public.

Wireless Robotic Routers for Emergency Response

A significant burden for the job of first responders during a disaster is the lack of communication with the victims due to impaired or missing communication infrastructure. A group of wireless equipped robots can establish a network with trapped civilians and provide the rescuers with voice or video connection and vital sensor data. How does one maximise the number of civilians connected to the network, while maintaining (usually multi-hop) connectivity between the robots? We propose optimisation algorithms both for central control (based on characteristics typically found in assignment and network flow optimisation problems, solved with a standard mixed integer programming solver) and for autonomous distributed control, taking into account the uncertainty of the locations.

Simulation of Building Evacuation

The optimisation of the evacuation of a building plays a fundamental role in emergency situations. The behaviour of individuals, the directions that civilians receive, and the actions of the emergency personnel, affect the success of the operation. We have developed an agent-oriented Distributed Building Evacuation Simulator (DBES) that represents the individual, intelligent, and interacting agents that cooperate and compete while evacuating the building. The system takes into account detailed information about the building and the sensory capabilities that it may contain. Since its level of detail leads to computational needs that grow at least as a polynomial function of the number of the simulated agents, it has been designed to operate in a distributed manner. It has also been integrated with a wireless sensor network which offers a closed loop representation of the evacuation procedure, including the sensed data and the emergency decision making.


  • J13 - Charalampos Z. Patrikakis and George Loukas. Wear it or share it? Wearables and Security. Cutter Executive Update, Cutter Information Corp., 2017.
  • J12 - Ryan Heartfield, George Loukas, Diane Gan. You are probably not the weakest link: Towards practical prediction of susceptibility to semantic social engineering attacks. Access, IEEE, 2016.
  • C29 - Avgoustinos Filippoupolitis, Babak Takand, George Loukas. Activity Recognition in a Home Setting using Off the Shelf Smart Watch Technology. Smart ubiquitous technologies for human behaviour coaching (SUTCoaching), Granada, Spain, 14-16 Dec. 2016.
  • C28 - Anatolij Bezemskij, George Loukas, Richard Anthony, Diane Gan. Behaviour-based anomaly detection of cyber-physical attacks on a robotic vehicle. 8th International Symposium on Cyberspace Safety and Security (CSS), Granada, Spain, 14-16 Dec. 2016.
  • C27 - Avgoustinos Filippoupolitis, William Oliff, George Loukas. Bluetooth Low Energy based Occupancy Detection for Emergency Management. 15th International Conference on Ubiquitous Computing and Communications (IUCC), Granada, Spain, 14-16 Dec. 2016.
  • J11 - George Loukas, Yongpil Yoon, Georgia Sakellari, Tuan Vuong, Ryan Heartfield. Computation offloading of a vehicle's continuous intrusion detection workload for energy efficiency and performance. Simulat. Modell. Pract. Theory, Elsevier, 2016.
  • C26 - Avgoustinos Filippoupolitis, William Oliff, George Loukas. Occupancy Detection for Building Emergency Management using BLE Beacons. ISCIS, Krakow, Poland, 27-28 Oct. 2016.
  • J10 - Ryan Heartfield and George Loukas. Predicting the performance of users as human sensors of security threats in social media. International Journal on Cyber Situational Awareness (IJCSA), ISSN (Print) 2057-2182, 2016.
  • J9 - George Loukas and Charalampos Patrikakis. Cyber and Physical Threats to the Internet of Everything. Cutter IT Journal, Cutter Information Corp, 29(7): 5-11, July 2016.
  • C25 - Anatolij Bezemskij, Richard John Anthony, George Loukas, Diane Gan. Threat Evaluation Based on Automatic Sensor Signal Characterisation and Anomaly Detection. The Twelfth International Conference on Autonomic and Autonomous Systems (ICAS 2016), IARIA, Lisbon, Portugal, June 26-30, 2016.
  • C24 - Ryan Heartfield and George Loukas. Evaluating the reliability of users as human sensors of social media security threats. Social Media, June 2016. [Best Paper Award]
  • J8 - David Gresty, Diane Gan, George Loukas, and Cos Ierotheou. Facilitating Forensic Examinations of Multi-User Computer Environments through Session-to-Session Analysis of Internet History. Digital Investigation, Elsevier, 16 (2016), S124-S133.
  • J7 - R. Heartfield and G. Loukas. A taxonomy of attacks and a survey of defence mechanisms for semantic social engineering attacks. Computing Surveys (CSUR), ACM, 48(3), 2016.
  • C23 - Tuan Vuong, George Loukas, Diane Gan, and Anatolij Bezemskij. Decision Tree-based Detection of Denial of Service and Command Injection attacks on Robotic Vehicles. 7th International Workshop on Information Forensics and Security(IEEE WIFS 2015), IEEE, Rome, Italy, November 16-19, 2015.
  • C22 - Tuan Vuong, George Loukas and Diane Gan. Performance evaluation of cyber-physical intrusion detection on a robotic vehicle. 13th International Conference on Pervasive Intelligence and Computing (IEEE-PICOM 2015), IEEE, Liverpool, UK, October 26-28, 2015.
  • B3 - World Institute for Nuclear Security (co-author: George Loukas). Effectively Integrating Physical and Cyber Security. WINS International Best Practice Guide 4.11. May 2015.
  • B2 - George Loukas. Cyber-Physical Attacks: A growing invisible threat. 1st Edition. Butterworth-Heinemann (Elsevier), 2015.
  • C21 - Stelios Kapetanakis, Avgoustinos Filippoupolitis, George Loukas and Tariq Saad Al Murayziq. Profiling cyber attackers using case-based reasoning. 19th UK workshop on Case-Based Reasoning (UK-CBR 2014), Cambridge, UK, December 9, 2014.
  • C20 - David W. Gresty, Diane Gan and George Loukas. Digital Forensic Analysis of Internet History Using Principal Component Analysis. Proceedings of the 15th Annual Postgraduate Symposium on the Convergence of Telecommunications, Networking and Broadcasting (PGNet 2014), Liverpool, UK, June 23-24, pp. 237-242.
  • C19 - A. Filippoupolitis, G. Loukas and S. Kapetanakis. Towards real-time profiling of human attackers and bot detection. 7th International Conference on Cybercrime Forensics Education and Training (CFET), Canterbury, UK, 10-11 July 2014.
  • C18 - T. Vuong, A. Filippoupolitis, G. Loukas, D. Gan. Physical Indicators of Cyber Attacks Against a Rescue Robot. Proceedings of PerNEM, IEEE International Conference on Pervasive Computing and Communications (PERCOM), Budapest, Hungary, 24-28 March 2014.
  • J6 - R. Lent, G. Sakellari and G. Loukas. Strengthening the Security of Cognitive Packet Networks. International Journal of Advanced Intelligence Paradigms (IJAIP), Inderscience, 6(1): 14-27, March, 2014.
  • J5 - G. Loukas, D. Gan and T. Vuong. A Review of Cyber Threats and Defence Approaches in Emergency Management. Future Internet, MDPI, 5(2), pp. 205-236, 2013.
  • J4 - G. Sakellari and G. Loukas. A survey of mathematical models, simulation approaches and testbeds used for research in Cloud Computing. Simulat. Modell. Pract. Theory, Elsevier, http://dx.doi.org/10.1016/j.simpat.2013.04.002, 2013.
  • BC1 - Lachlan MacKinnon, Liz Bacon, Diane Gan, Georgios Loukas, David Chadwick and Dimitrios Frangiskatos "Cyber Security Countermeasures to Combat Cyber Terrorism", in Babak Akhgar and Simeon Yates (eds), "Strategic Intelligence Management", Chapter 20, pp. 234-257, Butterworth-Heinemann (Elsevier), ISBN 978-0-12-407191-9, 2013.
  • C17 - G. Loukas, D. Gan and T. Vuong. A taxonomy of cyber attack and defence mechanisms for emergency management networks. Proceedings of PerNEM, IEEE International Conference on Pervasive Computing and Communications (PERCOM), San Diego, CA, USA, 18-22 March 2013.
  • C16 - R. Heartfield and G. Loukas. On the feasibility of automated semantic attacks in the Cloud. Proceedings of IEEE ISCIS, pp. 343-351, ISBN 978-1-4471-4593-6, Paris, France, 3-5 October 2012.
  • C15 - D. Chadwick, D. Gan, G. Loukas, and D. Frangiskatos. Intensive Teaching of cyber security for mid-career physical security professionals with limited academic background. 6th International Conference on Cybercrime Forensics Education and Training (CFET), Canterbury, UK, 6 September 2012.
  • J3 - G. Loukas and G. Oke. Protection Against Denial of Service Attacks: A Survey. Computer Journal, 53(7): 1020-1037, 2010
  • C14 - A. Filippoupolitis, G. Loukas, S. Timotheou, N. Dimakis, and E. Gelenbe. Emergency response systems for disaster management in buildings. NATO Symposium on C3I for Crisis, Emergency and Consequence Management, Bucharest, May 2009. [Best Paper Award]
  • C13 - S. Timotheou and G. Loukas. Autonomous Networked Robots for the Establishment of Wireless Communication in Uncertain Emergency Response Scenarios. Proceedings of the 2009 ACM Symposium on Applied Computing (SAC 09), pp. 1171-1175, Hawaii, USA, March 8 - 12, 2009
  • C12 - G. Loukas and S. Timotheou. Connecting trapped civilians to an ad hoc network of emergency response robots. 11th IEEE International Conference on Communications Systems (ICCS 2008), pp. 599-603, Guangzhou, China, November 2008
  • C11 - G. Loukas, S. Timotheou and E. Gelenbe. Robotic Wireless Network Connection of Civilians for Emergency Response Operations. 23rd IEEE International Symposium on Computer and Information Sciences, Istanbul, Turkey, October 27-29, 2008
  • C10 - G. Loukas, G. Oke and E. Gelenbe. Defending against Denial of Service in a Self-Aware Network: A Practical Approach. NATO Symposium on Information Assurance for Emerging and Future Military Systems. Ljubljana, Slovenia, October 13-14, 2008
  • C9 - G. Oke and G. Loukas. Distributed Defence Against Denial of Service Attacks: A practical view. Proceedings of the 2008 BCS International Conference on Visions of Computer Science, pp. 153-162, ISBN 978-1-906124-08-3, London, UK, 22-24 September 2008.
  • C8 - A. Filippoupolitis, L. Hey, G. Loukas, E. Gelenbe, and S. Timotheou. Emergency Response Simulation Using Wireless Sensor Networks. The 1st International Conference on Ambient Media and Systems, Quebec City, Canada, February 2008
  • C7 - A. Filippoupolitis, E. Gelenbe, D. Gianni, L. Hey, G. Loukas, and S. Timotheou. Distributed Agent-based Building Evacuation Simulator. Society for Modelling & Simulation, SCSC'08 conference, Edinburgh, Scotland, June 16-19, 2008
  • C6 - D. Gianni, G. Loukas, and E. Gelenbe. A Simulation Framework for the Investigation of Adaptive Behaviours in Largely Populated Building Evacuation Scenarios. International Workshop on "Organised Adaptation in Multi-Agent Systems" in the Seventh International Joint Conference on Autonomous Agents & Multi-Agent Systems (AAMAS 08), Estoril, Portugal, May 2008
  • J2 - G. Oke and G. Loukas. A Denial of Service Detector based on Maximum Likelihood Detection and the Random Neural Network. Computer Journal , 50(6):717-727, 2007
  • C5 - G. Loukas and G. Oke. A Biologically Inspired Denial of Service Detector Using the Random Neural Network. IEEE MASS2007, Bionetworks 07 workshop, Pisa, October 2007
  • C4 - G. Oke, G. Loukas, and E. Gelenbe. Detecting Denial of Service Attacks with Bayesian Classifiers and the Random Neural Network. Fuzz-IEEE 2007, London, July 2007
  • C3 - G. Loukas and G. Oke. Likelihood Ratios and Recurrent Random Neural Networks in Detection of Denial of Service Attacks. SPECTS 07, Security and Trust, San Diego, July 2007
  • J1 - E. Gelenbe and G. Loukas. A Self-Aware Approach to Denial of Service Defence. Computer Networks, 51(5):1299-1314, April 2007
  • B1 - George Loukas. Defence Against Denial of Service in Self-Aware Networks. PhD thesis, Imperial College, University of London, 2006.
  • C2 - E. Gelenbe, M. Gellman, and G. Loukas. An Autonomic Approach to Denial of Service Defence. IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, pp. 537-541, June 2005
  • C1 - E. Gelenbe, M. Gellman, and G. Loukas. Defending Networks against Denial of Service Attacks. Conference on Optics/Photonics in Security and Defence (SPIE), Unmanned/Unattended Sensors and Sensor Networks, vol. 5611, pp. 233-243, October 2004

  • Reviewer for:

    ACM Transactions on Internet Technology, IEEE Transactions on Network and Service Management, IEEE Transactions on Parallel and Distributed Systems, IEEE transactions on Systems, Man and Cybernetics, Elsevier Ad Hoc Networks, Elsevier Performance Evaluation, Elsevier Simulation Modelling Practice and Theory, BCS Computer Journal, Springer Journal of Internet Services and Applications, MDPI Future Internet, MDPI Sensors, MDPI Information, Wiley International Journal of Network Management
    IEEE International Conference on Pervasive Computing (PERCOM), IEEE International Conference on High Performance and Communications (HPCC), IEEE International Symposium on Computer and Information Sciences (ISCIS), IEEE International Conference on High Performance Computing (HIPC), IEEE / ACM International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS), IEEE Global Communications Conference (GLOBECOM), IEEE Consumer Communications & Networking Conference (CCNC), International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP), Next Generation Internet Networks (NGI), International Conference on Artificial Neural Networks (ICANN), IAES International Conference on Electrical Engineering, Computer Science and Informatics (EECSI), International Conference on Telecommunications (ICT).