Dr. Christoforos Ntantogian (Dadoyan) received his B.Sc. degree in Computer Science and Telecommunications in 2004 and his M.Sc. degree in Computer Systems Technology in 2006 both from the Department of Informatics and Telecommunications of University of Athens. In 2009 he received his Ph.D. from the University of Athens (Department of Informatics and Telecommunications).
His research interests are on practical aspects of computer and network security.
Courses
Postgraduate Program:
- Security Assesment and Vulnerability Exploitation
- Digital Forensics and Web Security
Journals
- Vaios Bolgouras, Christoforos Ntantogian, Emmanouil Panaousis, Christos Xenakis, “ Distributed Key Management in Microgrids.” IEEE Transactions on Industrial Informatics, 2019 (accepted).
- Christoforos Ntantogian, Eleni Veroni, Georgios Karopoulos, Christos Xenakis, “ A survey of voice and communication protection solutions against wiretapping,” Computers & Electrical Engineering, Elsevier, Vol. 77, pp:163-178, July, 2019.
- Christoforos Ntantogian, Giorgos Poulios, Georgios Karopoulos, Christos Xenakis, “Transforming Malicious Code to ROP Gadgets for Antivirus Evasion“, IET Information Security (accepted for publication).
- Christoforos Ntantogian, Stefanos Malliaros, Christos Xenakis, “Evaluation of password hashing schemes in open source web platforms”, Computers & Security, Elsevier, Vol. 84, pp 206-224, July 2019.
- Anastasios Stasinopoulos, Christoforos Ntantogian, Christos Xenakis, “Commix: Automating Evaluation and Exploitation of Command Injection Vulnerabilities in Web Applications“, International Journal of Information Security, Springer (Accepted for publication).
- Giorgos Karopoulos, Christoforos Ntantogian, Christos Xenakis, “MASKER: Masking for privacy-preserving aggregation in the smart grid ecosystem“, Computers & Security, Elsevier, Volume 73, pp: 307-325, March 2018.
- Christoforos Panos, Christoforos Ntantogian, Stefanos Malliaros, Christos Xenakis, “Quantifying, Analyzing and Evaluating Blackhole Attacks in Infrastructure-less Networks“, Computer Networks, Elsevier, Vol. 113, February 2017, pp: 94-110
- Christos Xenakis, Christoforos Ntantogian, Orestis Panos, “(U)SimMonitor: A Mobile Application for Security Evaluation of Cellular Networks“, Computer and Security, Elsevier, Vol. 60, Issue 1, pp: 62-70, July 2016
- Christoforos Ntantogian, Stefanos Maliaros, Christos Xenakis, “Gaithashing: a two-factor authentication scheme based on gait features“, Computers and Security, Elsevier Science, Vol. 52, Issue 1, pp: 17-32, July. 2015.
- Christoforos Ntantogian, Dimitris Apostolopoulos, Giannis Marinakis, Christos Xenakis, “Evaluating the privacy of Android mobile applications under forensic analysis“, Computers and Security, Elsevier Science, Vol. 42, pp:66-76, May 2014.
- Christos Xenakis, Christoforos Ntantogian, “An Advanced Persistent Threat in 3G Networks: Attacking the Home Network from Roaming Networks“, Computers and Security, Elsevier Science, Vol. 40, Issue 1, pp:84-94, February 2014
- Christoforos Ntantogian, Christos Xenakis, “Questioning the Feasibility of UMTS-GSM Interworking Attacks,” Wireless Personal Communications, Springer, Vol. 65, No. 1, pp:157-163, July 2012.
- Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “Reducing False Synchronizations in 3G-WLAN Integrated Networks“, IEEE Transactions on Wireless Communications, Vol. 10, No. 11, pp: 3765-3773, Nov. 2011.
- Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “A Generic Mechanism for Efficient Authentication in B3G Networks”, Computers & Security, Elsevier Science, Vol.29, Issue 4, pp:460-475, June 2010.
- Christoforos Ntantogian, Christos Xenakis, “One pass EAP-AKA Authentication in 3G-WLAN Integrated Networks“, Wireless Personal Communications, Springer, Vol. 48, Issue 4, pp: 569-584, March 2009.
- Christos Xenakis, Christoforos Ntantogian, Ioannis Stavrakakis, “A Network-Assisted Mobile VPN deployment for securing users data in UMTS“, Computer Communications, Elsevier, vol. 31, No. 14, pp. 3315-3327 September 2008.
- Christos Xenakis, Christoforos Ntantogian, “Security Architectures for B3G Mobile Networks“, Telecommunication Systems, Springer, Vol.35, pp: 123-139, Aug. 2007.
Conferences
- Farnaz Mohammadi, Angeliki Panou, Christoforos Ntantogian, Eirini Karapistoli, Emmanouil Panaousis, Christos Xenakis , “CUREX: seCUre and pRivate hEalth data eXchange. ” In Proc. Web Intelligence 2019, Thessaloniki, Greece, Oct. 2019.
- Michail Bampatsikos, Christoforos Ntantogian, Christos Xenakis, Stelios C.A. Thomopoulos , “BARRETT BlockchAin Regulated REmote aTTestation. ” In Proc. Web Intelligence 2019, Thessaloniki, Greece, Oct. 2019.
- Aristeidis Farao, Juan Enrique Rubio, Cristina Alcaraz, Christoforos Ntantogian, Christos Xenakis and Javier Lopez, “SealedGRID: A Secure Interconnection Technologies for Smart Grid Applications ” In Proc. 14th International Conference on Critical Information Infrastructures Security, CRITIS 2019, Linköping, Sweden, Sept. 2019.
- George Suciu, Cristiana-Ioana Istrate, Alexandru Vulpe, Mari-Anais Sachian, Marius Vochin, Aristeidis Farao, Christos Xenakis, Attribute-based Access Control for Secure and Resilient Smart Grids, ICS-CSR 2019, Athens, Greece, Sept. 2019.
- Aristeidis Farao, Christoforos Ntantogian, Cristiana Istrate, George Suciu, Christos Xenakis, SealedGRID: Scalable, trustEd, and interoperAble pLatform for sEcureD smartGRID, ICS-CSR 2019, Athens, Greece, Sept. 2019.
- Nikos Koutroumpouchos, Christoforos Ntantogian, Sofia-Anna Menesidou, Kaitai Liang, Panagiotis Gouvas, Christos Xenakis, Thanassis Giannetsos, “Secure Edge Computing with Lightweight Control-Flow Property-based Attestation,” In Proc. 1st International Workshop on Cyber-Security Threats, Trust and Privacy Management in Software-defined and Virtualized Infrastructures co-located with IEEE NetSoft 2019, Paris, France, June 2019.
- Ioanna Kitsaki, Anna Angelogianni, Christoforos Ntantogian, Christos Xenakis, “A Forensic Investigation of Android Mobile Applications” In Proc. 22nd Pan-Hellenic Conference on Informatics (PCI 2018), Athens, Greece, Nov. 2018.
- Angeliki Panou, Christoforos Ntantogian, Christos Xenakis, “RiSKi: A Framework for Modeling Cyber Threats to Estimate Risk for Data Breach Insurance“, In Proc. 21st Pan-Hellenic Conference on Informatics (PCI 2017), Larisa, Greece, Sept. 2017.
- Christoforos Panos, Stefanos Malliaros, Christoforos Ntantogian, and Christos Xenakis, “A Security Evaluation of FIDO’s UAF Protocol in Mobile and Embedded Devices“, 28th International Tyrrhenian Workshop (TIWDC), Palermo, Italy, September 18-20, 2017.
- Stefanos Malliaros, Christoforos Ntantogian, Christos Xenakis, “Protecting sensitive information in the volatile memory from disclosure attacks“, In Proc. 11th International Conference on Availability, Reliability and Security (ARES 2016), Salzburg, Austria, August 2016.
- Alexia Chatzikonstantinou, Christoforos Ntantogian, Georgios Karopoulos, Christos Xenakis, ” Evaluation of Cryptography Usage in Android Applications“, In Proc. 9th EAI International Conference on Bio-inspired Information and Communications Technologies, New York City, New York, USA, Dec. 2015.
- Anastasios Stasinopoulos, Christoforos Ntantogian, Christos Xenakis, “Commix: Detecting and Exploiting Command Injection Flaws“, BlackHat Europe, Amsterdam, November 2015.
- Giorgos Poulios, Christoforos Ntantogian, Christos Xenakis, “ROPInjector: Using Return Oriented Programming for Polymorphism and Antivirus Evasion,” BlackHat USA 2015, Las Vegas NV, USA, August 2015.
- Christoforos Ntantogian, Grigoris Valtas, Faidon Lalagianis, Christos Xenakis, Giorgos Karopoulos, “Attacking GSM Networks as a Script Kiddie Using Commodity Hardware and Software“, 12th International Conference on Trust, Privacy & Security in Digital Business (Trustbus15), Sept. 2015, Valencia, Spain.
- Christos Xenakis, Christoforos Ntantogian, “Attacking the baseband modem of mobile phones to breach the users’ privacy and network security“, 7th International Conference on Cyber Conflict (CyCon 2015), Talinn, Esthonia, May 2015.
- Anastasios Stasinopoulos, Christoforos Ntantogian, Christos Xenakis, “Bypassing XSS Auditor: Taking Advantage of Badly Written PHP Code, ” In Proc. 14th IEEE International Symposium on Signal Processing and Information Technology (ISSPIT 2014), Noida, India, Dec 2014.
- Anastasios Stasinopoulos, Christoforos Ntantogian, Christos Xenakis, “The weakest link on the network: exploiting ADSL routers to perform cyber-attacks”, 13th IEEE International Symposium on Signal Processing and Information Technology, (ISSPIT 2013), Athens, Greece, December 2013.
- Haralampos Petrou, Christoforos Ntantogian, Christos Xenakis, “A better time approximation scheme for e-passports”, In Proc. of 10th International Conference on Trust, Privacy & Security in Digital Business (TrustBus 2013), Prague, Czech Republic, August 2013.
- Dimitris Apostolopoulos, Giannis Marinakis, Christoforos Ntantogian, Christos Xenakis, “Discovering authentication credentials in volatile memory of Android mobile devices”, In Proc. 12th IFIP Conference on e-Business, e-Services, e-Society (I3E 2013), Athens, Greece, April 2013.
- Christoforos Ntantogian, Dimitris Gkikakis, Christos Xenakis, “PRIPAY: A Privacy Preserving Architecture for Secure Micropayments”, ICSNC 2012, Lisbon, Portugal, Nov 2012.
- Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “Analysis and Modeling of False Synchronizations in 3G-WLAN Integrated Networks”, International Information Security and Privacy Conference (IFIP SEC2012), Heraklion, Crete, Greece, June 2012.
- Eleni Darra, Christoforos Ntantogian, Christos Xenakis, Sokratis Katsikas, “A Mobility and Energy-aware Hierarchical Intrusion Detection System for Mobile ad hoc Networks,” In Proc. 8th International Conference on Trust, Privacy & Security in Digital Business (TrustBus 2011), Toulouse France, August 2011.
- Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “Reducing the User Authentication Cost in Next Generation Networks”, In Proc. In the Fifth Annual Conference on Wireless On demand Network Systems and Services (WONS 2008), Garmisch-Partenkirchen, Germany, Jan 2008.
- Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “Efficient Authentication for Users Autonomy in Next Generation All-IP Networks”, In Proc. In Proc. 2nd International Conference on Bio-Inspired Models of Network, Information, and Computing Systems (BIONETICS 2007), Budapest, Hungary, Dec 2007.
- Christoforos Ntantogian, Christos Xenakis, “Reducing Authentication Traffic in 3G-WLAN Integrated Networks”, In Proc. 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, (PIMRC 2007), Athens, Greece, Sept 2007.
- Christoforos Ntantogian, Christos Xenakis, “A Security Protocol for Mutual Authentication and Mobile VPN Deployment in B3G Networks”, In Proc. 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, (PIMRC 2007), Athens, Greece, Sept 2007.
- Christoforos Ntantogian, Christos Xenakis, “A Security Binding for Efficient Authentication in 3G-WLAN Heterogeneous Networks”, PhD poster presented in the 6th Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2007), Corfu, Greece, June 2007.
- Christoforos Ntantogian, Christos Xenakis, Lazaros Merakos, “An Enhanced EAP-SIM Authentication Scheme for Securing WLAN”, 15th IST Mobile & Wireless Communications, Mykonos, Greece, June 2006.
Books
Book Chapters:
- Georgios Karopoulos, Christoforos Ntantogian, Christos Xenakis, “Privacy-Preserving Aggregation in the Smart Grid,” Chapter in Security Solutions and Applied Cryptography in Smart Grid Communications (Mohamed Amine Ferrag, Ahmed Ahmim), IGI Global, August 2016.
- Christoforos Ntantogian, Christos Xenakis, “Privacy Mechanisms in 4th Generation Networks,” book chapter in “Protection Privacy in Information and Communication Technologies: Technical and Legal Issues,” Papasotiriou (2009), editor: K. Labrinoudakis, L. Mitrou, S. Gkritzalis, S. Katsikas.
- Christoforos Ntantogian, Christos Xenakis, “Security Architectures for B3G Mobile Networks,” book chapter in “Handbook of Research on Wireless Security,” Information Science Reference (2008), editor: Yan Zhang, Jun Zheng, Miao Ma, ISBN: 978-1-59904-899-4.
