A generic Grid security policy reconciliation framework. - Lazaros Gymnopoulos; Vassilis Tsoumas; Yannis Soupionis; Stefanos Gritzalis (Internet Res., 2005)

An Adaptive Policy-Based Approach to SPIT Management. - Yannis Soupionis; Stelios Dritsas; Dimitris Gritzalis (ESORICS, 2008)

SPIT Identification Criteria Implementation: Effectiveness and Lessons Learned. - Stelios Dritsas; Yannis Soupionis; Marianthi Theoharidou; Yannis Mallios; Dimitris Gritzalis (SEC, 2008)

Audio CAPTCHA for SIP-Based VoIP. - Yannis Soupionis; George Tountas; Dimitris Gritzalis (SEC, 2009)

A Formally Verified Mechanism for Countering SPIT. - Yannis Soupionis; Stylianos Basagiannis; Panagiotis Katsaros; Dimitris Gritzalis (CRITIS, 2010)

Audio CAPTCHA: Existing solutions assessment and a new implementation for VoIP telephony. - Yannis Soupionis; Dimitris Gritzalis (Comput. Secur., 2010)

ASPF: Adaptive anti-SPIT Policy-based Framework. - Yannis Soupionis; Dimitris Gritzalis (ARES, 2011)

SPIDER: A platform for managing SIP-based Spam over Internet Telephony (SPIT). - Dimitris Gritzalis; Giannis F. Marias; Yacine Rebahi; Yannis Soupionis; Sven Ehlert (J. Comput. Secur., 2011)

Πρόληψη του Spam στη διαδικτυακή τηλεφωνία μέσω πολιτικών ασφάλειας και ηχητικών CAPTCHA - Yannis Soupionis (2011)

Probabilistic Model Checking of CAPTCHA Admission Control for DoS Resistant Anti-SPIT Protection. - Emmanouela Stachtiari; Yannis Soupionis; Panagiotis Katsaros; Anakreontas Mentis; Dimitris Gritzalis (CRITIS, 2012)

User-centric, Privacy-Preserving Adaptation for VoIP CAPTCHA Challenges. - Aimilia Tasidou; Pavlos S. Efraimidis; Yannis Soupionis; Lilian Mitrou; Vasilios Katos (HAISA, 2012)

Web Services Security Assessment: An Authentication-Focused Approach. - Yannis Soupionis; Miltiadis Kandias (SEC, 2012)

Formal analysis for robust anti-SPIT protection using model checking. - Dimitris Gritzalis; Panagiotis Katsaros; Stylianos Basagiannis; Yannis Soupionis (Int. J. Inf. Sec., 2012)

The Sphinx enigma in critical VoIP infrastructures: Human or botnet? - Dimitris Gritzalis; Yannis Soupionis; Vasilios Katos; Ioannis Psaroudakis; Panajotis Katsaros; Anakreon Mentis (IISA, 2013)

Hacking VoIP. - Yannis Soupionis; Dimitris Gritzalis (Comput. Secur., 2013)

Cyber Attacks in Power Grid ICT Systems Leading to Financial Disturbance. - Yannis Soupionis; Thierry Benoist (CRITIS, 2014)

Faults and Cyber Attacks Detection in Critical Infrastructures. - Yannis Soupionis; Stavros Ntalampiras; Georgios Giannopoulos (CRITIS, 2014)

Demo abstract: Demonstrating cyber-attacks impact on cyber-physical simulated environment. - Yannis Soupionis; Thierry Benoist (ICCPS, 2014)

A game-theoretic analysis of preventing spam over Internet Telephony via audio CAPTCHA-based authentication. - Yannis Soupionis; Remous-Aris Koutsiamanis; Pavlos S. Efraimidis; Dimitris Gritzalis (J. Comput. Secur., 2014)

Cyber-physical testbed - The impact of cyber attacks and the human factor. - Yannis Soupionis; Thierry Benoist (ICITST, 2015)

A fault diagnosis system for interdependent critical infrastructures based on HMMs. - Stavros Ntalampiras; Yannis Soupionis; Georgios Giannopoulos (Reliab. Eng. Syst. Saf., 2015)

Cyber Security Impact on Power Grid Including Nuclear Plant. - Yannis Soupionis; Roberta Piccinelli; Thierry Benoist (FedCSIS, 2016)

Privacy-preserving, user-centric VoIP CAPTCHA challenges: An integrated solution in the SIP environment. - Aimilia Tasidou; Pavlos S. Efraimidis; Yannis Soupionis; Lilian Mitrou; Vasilios Katos (Inf. Comput. Secur., 2016)

Blockchain Performance Analysis for Supporting Cross-Border E-Government Services. - Dimitris Geneiatakis; Yannis Soupionis; Gary Steri; Ioannis Kounelis; Ricardo Neisse; Igor Nai Fovino (IEEE Trans. Engineering Management, 2020)