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Smart cities need to ensure a secure and safe physical and digital ecosystem for the well-being of EU citizens. The EU-funded S4AllCities project aims to make cities’ infrastructures, services, ICT systems and Internet of Things more resilient while promoting intelligence and information sharing amongst security stakeholders. To achieve this, it will integrate advanced technological and organisational solutions into a market-oriented, unified cyber–physical security management framework. The system will focus on risk-based open smart spaces security management, cybersecurity shielding, suspicious activity, behaviour tracking, the identification of unattended objects, the real-time estimation of cyber–physical risks in multiple locations and measures activation for effective crisis management. This work will play a role in promoting good safety and security practices in European cities.


In the cities, public spaces such as malls, open crowded gathering areas and events, and non-restricted areas of transport infrastructures constitute “soft targets”, that is potential, numerous targets spread across the urban area and subject to “low cost” attacks strongly impacting the citizens.

The ever advancement of Smart City technologies, particularly with the proliferation of IoT Technologies, City infrastructure, operations and services are being transformed at unprecedented rates and scales. While these emerging technologies are bringing increased operational efficiencies, smart city infrastructure is also vulnerable to new threats and attacks on soft targets and crowded city open spaces.

S4AllCities seeks to change this.



S4ALLCities technology aims to revolutionize the way smart cities become more protected, prepared and resilient to both physical and cyber-attacks on City soft targets, smart spaces and critical infrastructure networks, by greatly augmenting City Spaces Situation Awareness with intelligence, context and evaluated real-time cyber and physical security threat levels.




Complement legacy monitoring systems with the adaptation of state of the art and beyond, low-cost surveillance technologies and solutions that enhance Smart City preparedness and defence capability in both cyber and physical space.


Design and develop an Open Platform for sharing and managing information, while providing intelligence that provides unprecedented situational awareness and decision support, while enhances European cities resilience, without compromising citizens’ fundamental rights and privacy.


Design and develop an intelligent communications architecture that ensures the interconnection and integration of the city smart systems, with the systems supporting security practitioners.


Significantly impact collaboration across all smart cities’ stakeholders, from urban planners to infrastructure operators, private service operators, security practitioners, IT supervisors and providers, while engaging citizens towards more secure and safe cities.


Validate and demonstrate the effectiveness of the integrated S4ALLCities SoS in relevant environments by the actual public authorities/end-users in three European Smart Cities accomplishing at the end of the project a TRL-7 level for the entire S4ALLCities platform.

Dissemination Material






LEAFLET (pdf )

Journal Publications
  1. E. Maltezos, K. Petousakis, A. Dadoukis, L. Karagiannidis, E. Ouzounoglou, M. Krommyda, G. Hadjipavlis, A. Amditis, “A Smart Building Fire and Gas Leakage Alert System with Edge Computing and NG112 Emergency Call Capabilities”, Information, Vol. 13, 2022. DOI:

  2. E. Maltezos, P. Lioupis, A. Dadoukis, L. Karagiannidis, E. Ouzounoglou, M. Krommyda, A. Amditis, “A Video Analytics System for Person Detection Combined with Edge Computing”, Computation, Vol. 10, 2022. DOI:

  3. J. Gonzalez-Villa, A. Cuesta, M. Spagnolo, M. Zanotti, L. Summers, A. Elms, A. Dhaya, K. Jedlicka, J. Martolos, D. Cetinkaya, "Decision-suport system for safety and security assessment and management in smart cities", Multimedia Tools and Applications,

  4. J. Martin, D. Cantero, M. Gonzalez, A. Cabrera, M. Larrañaga, E. Maltezos, P. Lioupis, D. Kosyvas, L. Karagiannidis, E. Ouzounoglou, and A. Amditis, “Embedded vision intelligence for safety of smart cities”, Journal of Imaging, under review.

Conference Proceedings
  1. P. Lioupis, A. Dadoukis, E. Maltezos, L. Karagiannidis, A. Amditis, M. Gonzalez, J. Martin, D. Cantero, M. Larrañaga, “Embedded Intelligence for Safety and Security Machine Vision Applications”, in International Conference on Image Analysis and Processing, ICIAP 2022, pp. 37-46, 2022. DOI:

  2. A. M. Grammatikaki, A. Raptakis, L. Gounaridis, A. Athanasopoulos, D. Gounaridis, P. Groumas, A. Dadoukis, E. Maltezos, L. Karagiannidis, E. Ouzounoglou, A. Amditis, H. Avramopoulos, C. Kouloumentas, “Portable FT-NIR spectroscopic sensor for detection of chemical precursors of explosives using advanced prediction algorithms”, Proceedings Volume 12139, Optical Sensing and Detection VII; 1213916, 2022. DOI:

  3. Z. Sabeur, A. Bruno, L. Johnstone M. Ferjani, D. Benaouda, D Cetinkaya, B. Arbab-Zavar, M. Sallal, B. Hardiman, “Digital Twins for the Intelligent Detection of Malicious Activities in Urban Spaces”. In: 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022) 24-28 July 2022 New York, USA. Cognitive Computing and Internet of Things, vol. 67 published by AHFE Open Access.

  4. Z. Sabeur, A. Bruno, L. Johnstone M. Ferjani, D. Benaouda, B. Arbab-Zavar, D. Cetinkaya, M. Sallal, “Cyber-Physical Behaviour Detection and Understanding using Artificial Intelligence”. In: 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022) 24-28 July 2022 New York, USA. Cognitive Computing and Internet of Things, vol. 67 published by AHFE Open Access.

  5. Z. Sabeur, M.C. Angelopoulos, L. Collick, N. Chechina, D. Cetinkaya, A. Bruno, “Advanced cyber and physical situation awareness in urban smart spaces", In International Conference on Applied Human Factors and Ergonomics (AHFE 2021), Lecture Notes in Networks and Systems, Vol. 259, Springer, 2021,

  6. O. Orza, F. Constantin, A. Negoita, S.C. Bosoc, C. Balaceanu, G. Suciu, “Indoor air quality monitoring for improvement of the environment in Smart Toilets”. In 2021 16th International Conference on Engineering of Modern Electric Systems (EMES) (pp. 1-4). IEEE, June 2021.

  7. E. Maltezos, L. Karagiannidis, A. Dadoukis, K. Petousakis, F. Misichroni, E. Ouzounoglou, L. Gounaridis, D. Gounaridis, C. Kouloumentas, A. Amditis, “Public safety in smart cities under the edge computing concept”, 2021 IEEE International Mediterranean Conference on Communications and Networking (MeditCom), pp. 88-93, 2021. DOI:

  8. J. González-Villa, A. Cuesta, M. Spagnolo, M. Zanotti, L. Summers, A. Elms, A. Dhaya, K. Jedlicka, J. Martolos, D. Cetinkaya. “Decision-Support System for Safety and Security Assessment and Management in Smart Cities” In Image Analysis and Processing. ICIAP 2022 Workshops: ICIAP International Workshops, Lecce, Italy, May 23–27, 2022, Revised Selected Papers, Part II May 2022 Pages 26–36, DOI:

  1. "An Overview of Adversarial Attacks", ATOS, S4AllCities Whitepaper, 2022.

  2. "Guidelines for Soft Target Protection: Best practices to tackle ethical, privacy and societal issues", Joint S4AllCities and IMPETUS Whitepaper, 2023.

  3. "AI and Digital Twin Technologies for Safety and Security in Smart Cities", Bournemouth University, S4AllCities Whitepaper, 2022, in submission.

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