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.

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», In Proc. The Seventh International Conference on Systems and Networks Communications (ICSNC 2012), Lisbon, Portugal, November 2012.

Dimitris Tsolkas, Nikos Passas, Christos Xenakis, Vassilis Papataxiarhis, Vassileios Tsetsos, “Busfinder: a personalized multimodal transportation guide with dynamic routing,” In Proc. 16th Panhellenic Conference on Informatics (PCI 2012), Piraeus, Greece, October 2012.

Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “Analysis and Modeling of False Synchronizations in 3G-WLAN Integrated Networks,” In Proc. 27th IFIP International Information Security and Privacy Conference (SEC 2012), Heraklion, Crete, Greece, June 2012.

Christoforos Panos, Platon Kotzias, Christos Xenakis, Ioannis Stavrakakis, » Securing the 802.11 MAC in MANETs: A Specification-based Intrusion Detection Engine,» In Proc. IEEE/IFIP, 9th International Conference on Wireless On-demand Network Systems and Services (WONS 2012), Courmayeur, Italy, January 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 Panos, Christos Xenakis, Ioannis Stavrakakis, «An Evaluation of Anomaly-based Intrusion Detection Engines for Mobile Ad Hoc Networks,» In Proc. 8th International Conference on Trust, Privacy & Security in Digital Business (TrustBus 2011), Toulouse France, August 2011.

Foivos Demertzis, Christos Xenakis, “SOMA: Self-Organized Mesh Authentication,” In Proc. 7th European Workshop on Public Key Services, Applications and Infrastructures (ΕuroPKI/10), Athens, Greece, Sept. 2010.

Nikos Vavoulas, Christos Xenakis, “A Risk Analysis Method for Deliberate Threats,” In Proc. 5th International Workshop on Critical Information Infrastructures Security, (CRITIS 2010), Athens, Greece, Sept. 2010.

Christoforos Panos, Christos Xenakis, Ioannis Stavrakakis, «A Novel Intrusion Detection System for MANETs,» In Proc. International Conference on Security and Cryptography (SECRYPT 2010), Athens, Greece, July 2010.

Christos Xenakis, Danae Apostolopoulou, Angeliki Panou, Ioannis Stavrakakis “A Qualitative Risk Analysis for the GPRS Technology “, In Proc. IEEE/IFIP International Conference on Embedded and Ubiquitous Computing (EUC-08), Shanghai, China, December 2008.

Dimitris Ztoupis, Kyriakos Zarifis, Christos Xenakis, Ioannis Stavrakakis “Towards a Security Framework for an Established Autonomous Network “, In Proc. IEEE International Symposium on Wireless Pervasive Computing, Santorini, Greece, May 2008.

Christoforos Ntantogian, Christos Xenakis, Ioannis Stavrakakis, “Reducing the User Authentication Cost in Next Generation Networks “, In Proc. 5th IEEE/IFIP 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. 2nd International Conference on Bio-Inspired Models of Network, Information, and Computing Systems (BIONETICS 2007), Budapest, Hungary, Dec 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, “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.

Kyriakos Zarifis, Dimitris Ztoupis, Christos Xenakis, “Security Issues in an Established Autonomous Wireless Network”, PhD poster presented in the 6th Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2007), Corfu, Greece, June 2007.

Kyriakos Zarifis, Dimitris Ztoupis, Christos Xenakis, “Security Issues in an Established Autonomous Wireless Network”, 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,” Proc. 15th IST Mobile & Wireless Communications, Mykonos, Greece, June 2006.

Christos Xenakis, Lazaros Merakos, “Vulnerabilities and Possible Attacks against the GPRS Backbone Network,” In Proc. International Workshop on Critical Information Infrastructures Security, (CRITIS’06), LNCS 4347, Springer, 2006, pp. 262 – 272.

Christos Xenakis, Nikos Loukas, Lazaros Merakos, “A Secure Mobile VPN Scheme for UMTS,” In Proc. European Wireless 2006, Athens, Greece, April 2006.

Dimitris Karteris, Christos Xenakis, Lazaros Merakos, “Context-Aware Service Provisioning in All-IP Networks”, In Proc. 13th IST Mobile & Wireless Communications, Lyon, France, June 2005.