Eleftherios Zacharioudakis PhD

Cybersecurity, cryptography and dependable computing

Visiting Lecturer, Computer Science
American University of Beirut – Mediterraneo

I study secure user authentication and the reliability of computer systems. My work includes zero-knowledge identification, fault-tolerant multiprocessor models, and the use of AI in cyber defense.

Previously Assistant Professor of Cybersecurity at Neapolis University Pafos. PhD in Computer Engineering, Igor Sikorsky Kyiv Polytechnic Institute.

Eleftherios Zacharioudakis
Also publishing as Lefteris Zacharioudakis
Pafos, Cyprus

Shared security operations for smaller organizations

Co-authored a shared SOC model addressing the cost of security operations for small and medium-sized enterprises. The framework considers multi-tenant architecture, privacy and regulatory requirements; implementation and empirical evaluation are proposed as next steps.

Zacharioudakis & Kakoulli · ICR 2025

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Reliability models for fault-tolerant computers

Co-authored a method for modeling how multiprocessor systems share reserve processors across subsystems. The paper develops a graph-logical construction algorithm and checks model correctness through examples and experiments.

Romankevich et al. · Applied Aspects of Information Technology

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Large language models in cyber defense

Co-authored a review of LLM applications in threat detection, analysis and response. It examines reported capabilities alongside privacy, security and ethical considerations, and identifies questions for further research.

Kakoulli, Zacharioudakis & Evripidou · EMCIS 2024 proceedings

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Efficient authentication for remote users

Proposed a zero-knowledge authentication method using one-way Boolean transformations and standard hash functions. The study describes user registration and authentication procedures and compares their computational requirements with earlier approaches.

Zacharioudakis · Scientific Notes of the Ukrainian Research Institute of Communications

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Appointments

2025–present
Visiting Lecturer, Computer ScienceAmerican University of Beirut – Mediterraneo
2023–2025
Assistant Professor of CybersecurityNeapolis University Pafos
2019–2023
Visiting Lecturer, Computer ScienceNeapolis University Pafos

Education

2018
PhD, Computer EngineeringNational Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
2014
Master’s in Public AdministrationNeapolis University Pafos
1999
MSc, Computer EngineeringNational Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
1997
BSc, Computer EngineeringNational Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
Full academic CV →

Digital Systems Design Lab

AUB Mediterraneo · Undergraduate

CSEN 203L · Fall 2025

Course record

Information Security

Neapolis University Pafos · Postgraduate · 7.5 ECTS

DIS504 · Published syllabus, 2025

Course record

AI-Enhanced Cybersecurity

Neapolis University Pafos · Undergraduate · 6 ECTS

BSc Computer Science and Artificial Intelligence · Published curriculum · Listed instructor

Published curriculum

Master’s thesis supervision

Supervised postgraduate research in intrusion detection, network reliability, smart embedded systems and digital healthcare at Neapolis University Pafos.

Students and thesis records →
  • Conference Co-ChairEMCIS 2025

    European Mediterranean & Middle Eastern Conference on Information Systems

    Paphos, Cyprus · September 11–12, 2025
  • Technical Program CommitteeISIoT 2025

    7th International Workshop on Intelligent Systems for the Internet of Things · co-located with DCOSS-IoT

    Lucca, Italy · June 9–11, 2025
  • Program Committeeedu4AI 2025

    2nd International Workshop on Education for Artificial Intelligence · co-located with ECAI

    Bologna, Italy · October 26, 2025

For research collaborations and opportunities in cybersecurity, computer systems and higher education.

ze00@aubmed.ac.cy

Pafos, Cyprus