People

WeSIS Lab people

Konstantinos Rantos (Director)

Dr K. Rantos is an Associate Professor at the Department of Computer Science at the International Hellenic University and Director of the Web Services and Information Security Lab.

Konstantinos Rantos is an Associate Professor at the Computer Science Department and Director of the Web Services and Information Security Lab at the International Hellenic University. In the past he held information security positions in the private and public sector. He participated in many national as well as research and development projects under EU ACTS, CIP LSPs, ARTEMIS JU, FP7, and H2020 programmes. He has more than 50 publications in journals, books and international conferences, and acts as a reviewer to a number of conferences and scientific journals. His research interests are in the areas of cybersecurity, cyber-threat management blockchains, authentication systems, and privacy.

Thomas D. Lagkas

Thomas D. Lagkas is an Assistant Professor of the Computer Science Department of the International Hellenic University.

Dr  has been Lecturer and then Senior Lecturer of the Computer Science Department of the International Faculty of The University of Sheffield – CITY College from 2012 to 2019. He also served as Research Director of the Computer Science Department of CITY College and Leader of the ICT Track of the South-East European Research Centre. Furthermore, he has been Adjunct Lecturer at the Department of Informatics and Telecommunications Engineering of the University of Western Macedonia from 2007 to 2013. Also, he has been Laboratory and then Scientific Associate at the Technological Educational Institute of Thessaloniki from 2004 to 2012.
In 2002, he graduated with honors from the Department of Informatics, Aristotle University of Thessaloniki, and he was awarded PhD on Wireless Networks from the same Department in 2006. He has been scholar of the Aristotle University Research Committee, as well as postdoctoral scholar of the National Scholarships Institute of Greece. In 2012 he completed his MBA studies at the Hellenic Open University, and he received a postdoctoral certificate on Teaching and Learning from The University of Sheffield in 2017.
His research interests are in the wider area of wireless networks with application on fields such as IoT systems, broadband networks, hybrid wireless-optical networks, e-health monitoring, 5G systems, UAV communications, as well as educational technologies with more than 70 research publications in respectful journals, international conferences, and book chapters. He has edited two books and is member of the Editorial Boards of four reputable scientific journals (published by: IEEE, Elsevier, Springer). Moreover, he actively participates in drafting research funding proposals, as well as in the implementation of the corresponding projects (he has been the primary investigator of the projects MedVision and ARRANGE-ICT). Since 2019, he has been promoted to Senior Member of IEEE.

Vassilis Tsoukalas

Mr. Tsoukalas works as an ETEP in the Department of Computer Science.

Vassilios Th. Tsoukalas is a lead developer and software engineer.

Mr. Tsoukalas works as an ETEP in the Department of Computer Science (former department of Industrial Informatics) of TEI of Kavala (2017-). He teaches the laboratory courses "Introduction to Programming", "Object Oriented Programming".

He has a B.Sc. in Computer Engineering (2000), Department of Informatics at the Technological Educational Institute of Athens. He also has a M.Sc., entitled "Information and Communication systems (Systems Security)" (3 years of study), Open University of Cyprus (2016).

Mr. Tsoukalas has been working since 2000 as Java and Java EE specialist and Developer using Database Systems (Oracle/MySQL), and Object-Oriented Analysis. He implemented several IT systems with Client/Server and Model View Controller architectures. He also participated as a researcher and developer in various research projects.

Mr Tsoukalas  was a laboratory associate in the Department of Industrial Informatics (2002-2011) and has taught the courses (theory and lab): "Computer Programming I", "Computer Programming II", "Introduction to Databases", "Advanced Topics in Databases". He also taught the laboratory courses: "Databases I", "Databases II", "Network programming", "Software Development Methodologies", "Object Oriented Programming", "Operating Systems".

Vasilios Tsoukalas also worked at the "Communications & Networking Centre (NOC)" of the Technological Educational Institute of Kavala (2002-2017) where he managed central services of the Foundation such as: VM Cluster, LDAP, DNS, EMAIL, Storage, etc.

Konstantinos Demertzis

Dr K.Demertzis is a military Officer and serves in Research and Informatics Corps of Hellenic Army.

Dr Konstantinos Demertzis is a military Officer and serves in Research and Informatics Corps of Hellenic Army. He holds Phd degree in the Environmental Informatics and Computational Intelligence at the Democritus University of Thrace and Master degree in the Communication & Computer Networking Technologies at the University of the Aegean. He is a Part-time Lecturer at the Computer and Informatics Engineering of the Eastern Macedonia & Thrace Institute of Technology, Research Associate at the National and Kapodistrian University of Athens and Adjunct Faculty at the University of Peloponnese. He holds certifications in advanced computer skills, networking technologies and cyber security by CISCO, Open University UK, University of Georgia USA and University of Applied Sciences Gelsenkirchen. Also, is a Google Certified Partner. His research interests are in the fields of Computational Intelligence, Big Data, Network Security, Malware Analysis and Critical Infrastructure Protection.

Konstantinos Tsiknas

K.Tsiknas is currently employed at the Hellenic Ministry of Defense, where he is involved with the development and implementation of various projects for the Greek army in the fields of computer networks, telecommunication and electricity.

Konstantinos Tsiknas received his Ph.D. in 2015 from Democritus University of Thrace (Greece). His research interests lie in the area of TCP congestion control and performance analysis in computer networks. Konstantinos received his MSc degree in mobile and satellite communications from Surrey University, UK, in 2001. From 1995 to 2009 he worked as a software engineer in telecom industry in Greece and in UK. He is currently employed at the Hellenic Ministry of Defense, where he is involved with the development and implementation of various projects for the Greek army in the fields of computer networks, telecommunication and electricity.

George Ioannou

Dr George Ioannou is a Post-doctoral research fellow at the Computer Science Department, Brunel University, London.

Dr George Ioannou is a Post-doctoral research fellow at the Computer Science Department, Brunel University, London. He was awarded his PhD in Intelligence Fusion for Cyber Situational Awareness from the same department in 2016. His recent work within the Smart Money project, Brunel University London focuses on the feasibility of Distributed Ledger Technology for Central Bank Digital Currencies. George is also involved with the development of Counterfactual-reasoning based explainable-AI agents for Cyber Incident Response within the Human-Like Computing project held at Brunel University London. George has experience as an IT engineer and Information Security Officer and a lab instructor at Brunel University London and the International Hellenic University.

D.Polizos

D.Polizos is a PhD student at the Department of Computer Science at the International Hellenic University.

He has a B.SC in Computer Science, Department of Computer Science at the International Hellenic Unerversity(2018). He also has a M.Sc, in Communication Networks and Systems Security, Department of Informatics, Aristotle University of Thessaloniki (2020). D. Polizos finished his internship at Hellenic Telecommunications Organization (2017) where he worked at the Department of Telecommunications Network Engineers. He successfully presented his graduate diploma dissertation with title Penetration Testing in Computer Systems.
His research interests are in the fields of Networking, Cyber Security, Penetration Testing.

Dimitrios Chatziamanetoglou

Dimitrios Chatziamanetoglou is a Service Delivery Manager (Transmission Services and Network Element Management) in NATO Communications and Information Agency (NCIA) as NATO International Civilian personnel.

Dimitrios Chatziamanetoglou is a Service Delivery Manager (Transmission Services and Network Element Management) in NATO Communications and Information Agency (NCIA) as NATO International Civilian personnel. He is a retired Telecommunications (Signals) Officer (LtCol) having served the Hellenic Army for 25 years, mostly as a network engineer and as Information Security and CIS Security Officer. He received his MSc in Telecommunications Engineering and his second MSc in Informatics and Management from the Aristotle University of Thessaloniki, Greece. He holds various certifications in Security (CISSP, CEH), in Risk Management (M_o_R), in Project Management (PRINCE2) and in IT Service Management (ISO/IEC 20000, ITIL). He is also a certified Radio Comms Engineer from the Hellenic Ministry of Digital Governance. He has an extensive experience in Cyber Security and Risk Management activities in both National and International environments. His interests are In the field of Cyber Security, Semantic Web, Blockchain and Radio Communications.