Education:
-Postdoctoral Researcher at the University of Piraeus, Faculty of Information and Communication Technologies (ICT), Department of Digital Systems (in progress).
-Doctor of Philosophy – PhD (Unanimously “Excellent” – HFRI Scholarship) from the Department of Information and Communication Systems Engineering (ICSE), University of the Aegean.
-Master’s Degree (MSc) in Information & Communication Systems Security from the University of the Aegean, Department of ICSE.
-Master of Education (MEd) in Didactics of Mathematics, Sciences, and ICT in Education: Interdisciplinary Approach, from the Department of Preschool Education and Educational Planning of the University of the Aegean.
-Bachelor of Science (BSc) in Communication Informatics & Administration from the University of Ioannina (dit.uoi.gr/alumni).
-Bachelor of Science (BSc) in History and Philosophy of Science, School of Science, National and Kapodistrian University of Athens (in progress).
Dissertation title:
Behavioral Biometrics for Continuous Authentication: Security and Privacy Issues.
Publications:
Books:
-Ioannis Stylios, Matina Zerva, Alexandros Tzallas (2026). Relational databases, Disigma Publications.
-Ioannis Stylios, Olga Thanou (2026). Governance, Risk & Compliance (GRC) Leadership in Cybersecurity. Textbook, Publisher: University of Athens.
-Ioannis Stylios, Olga Thanou (2025). AI Developers: Development of Artificial Intelligence Applications with Python and OpenAI API. Textbook, Publisher: University of Athens.
-Ioannis Stylios, Olga Thanou (2025). Data Analyst for Business: Utilizing AI Tools in Practice. Textbook, Publisher: University of Athens.
-Ioannis Stylios (2024). Statistical Data Analysis with SPSS. Textbook, Publisher: University of Aegean.
-Ioannis Stylios, Olga Thanou (2024). WordPress Web Development: Technologies and Applications for eCommerce and Dropshipping. Textbook, Publisher: University of Aegean.
-Ioannis Stylios, Olga Thanou (2024). Artificial Intelligence Applications (ChatGPT) in Education. Textbook, Publisher: University of Aegean.
-Ioannis Stylios, (2024) ChatGPT Expert User: Tools and Applications. Textbook, Publisher: University of Aegean.
-Ioannis Stylios, Olga Thanou (2023). Data Science and Big Data with R and Rstudio. Textbook, Publisher: University of Athens.
-Ioannis Stylios, Olga Thanou (2023). Data Analysis Using R: Introduction to R and RStudio. Textbook, Publisher: University of Athens.
-Ioannis Stylios, Olga Thanou (2022). WordPress Developer. Textbook, Publisher: University of Athens.
-Ioannis Stylios, (2022). Android Developer – Android App Production. Textbook, Publisher: University of Athens.
–Ioannis Stylios, (2020). Advanced Python with applications in Machine Learning. Publisher: University of the Aegean.
-Ioannis Stylios, (2020). Data Science with R. Textbook, Publisher: University of the
-Ioannis Stylios, (2020). Programming with Python. Textbook, Publisher: University of Aegean.
-Ioannis Stylios, (2020). Blockchain Technology. Textbook, Publisher: University of the Aegean.
-Ioannis Stylios, (2019). Internet of Things and Machine Learning Applications. Textbook, Publisher: University of Athens.
-Ioannis Stylios, (2019). IT & Cyber Security: Threat Management and Security Policies. Textbook, Publisher: University of Athens.
-Ioannis Stylios, (2019), Data Science with Python. Textbook, Publisher: University of Athens.
-Ioannis Stylios, (2018). Continuous Authentication with Biometrics & Behavioral Modalities: A New Era without PINs & Passwords. ISBN: 978-613-8-00459-2. Publisher: Lambert Academic Publishing.
Chapters in books:
-Information Security Analyst (2025), Textbook, Publisher: University of Athens. Chapter 7.1: Identification of Threats to Information System Security. Chapter 7.2: Information Security Policies. Chapter 7.3: Disaster Recovery Plan. Chapter 7.4: Security Awareness Programs.
-Digital Education (2020), Textbook, Publisher: University of Athens. Chapter 6: 1. Augmented Reality Technologies in Education, 2. Virtual Reality Technologies in Education, 3. Artificial Intelligence Technologies in Education, 4. Educational Games, Simulation, 5. Digital Services in Education: Digital Libraries and Archives, 6. Digital Services in Education: Archives, Digital Museums, 7. Digital Technology in the Classroom, 8. Social Networks in Education.
-Digital Transformation: Services and Technologies (2020), Textbook, Publisher: University of Aegean. Chapter 4: 1. Software Types and Programming Languages, 2. Introduction to Software Engineering, 3. Information Systems Development, 4. Introduction to Python, 5. Variables and Data Structures in Python, 6. Control flow and functions in Python.
-Blockchain Developer (2019), Textbook. Publisher: University of Athens. Ch12: Introduction to Decentralized Application Architecture, Ch13: Web3 and Application Examples, Ch14: Crowdfunding Platforms, Ch15: A Network for Blockchain-enabled Crowdfunding Platform.
-Digital Energy (2019), Textbook, Publisher: University of Athens. Chapters: Ch18: General Data Protection Regulation & Law 4624/2019, Ch19: Critical Infrastructure Protection Framework, Ch20: Cybersecurity and Electricity Systems.
-Blockchain and Energy (2019), Textbook, Publisher: University of Athens. Ch14: Blockchain and Internet of Energy, Ch15: Energy and Applications of Blockchain, Ch16: Platforms for Blockchains in Energy, Ch17: Blockchain in Energy and Security, Ch18: Blockchain and Energy Communities, Ch19: Regulatory Framework, Ch20: Future Challenges.
Articles:
-Ioannis Stylios, Sotirios Chatzis, Olga Thanou, Spyros Kokolakis, (2023). Continuous Authentication with Feature-Level Fusion of Touch Gestures and Keystroke Dynamics to Solve Security and Usability Issues. Computers & Security, ISSN 0167-4048. (IF 6).
-Ioannis Stylios, Spyros Kokolakis, Andreas Skalkos, Sotirios Chatzis, (2022), BioGames: a new paradigm and a behavioral biometrics collection tool for research purposes. Information and Computer Security, ISSN: 2056-4961, 30 No. 2, pp. 243-254. https://doi.org/10.1108/ICS-12-2020-0196. (IS: 3.3).
-Ioannis Stylios, Spyros Kokolakis, Olga Thanou, Sotirios Chatzis, (2022), “Key factors driving the adoption of behavioral biometrics and continuous authentication technology: an empirical research”, Information and Computer Security, Vol. 30 No. 4, pp. 562-582. https://doi.org/10.1108/ICS-08-2021-0124 (IS: 3.4).
-Ioannis Stylios, Andreas Skalkos, Spyros Kokolakis, Maria Karyda, (2022), “BioPrivacy: a behavioral biometrics continuous authentication system based on keystroke dynamics and touch gestures”, Information and Computer Security, ISSN: 2056-4961, Vol. 30 No. 5, pp. 687-704. https://doi.org/10.1108/ICS-12-2021-0212. INVITED PUBLICATION. (IS: 3.5).
-Ioannis Stylios, Spyros Kokolakis, Olga Thanou, Sotirios Chatzis, (2021). Behavioral biometrics & continuous user authentication on mobile devices: A survey, Information Fusion, Volume 66, 2021, Pages 76-99, ISSN 1566-2535, https://doi.org/10.1016/j.inffus.2020.08.021. (IF 13.669).
-Andreas Skalkos, Ioannis Stylios, Maria Karyda, Spyros Kokolakis, (2021). “Users’ Privacy Attitudes towards the Use of Behavioral Biometrics Continuous Authentication (BBCA) Technologies: A Protection Motivation Theory Approach” Journal of Cybersecurity and Privacy 1, no. 4: 743-766. https://doi.org/10.3390/jcp1040036.
Conferences:
-Ioannis Stylios, Andreas Skalkos, Spyros Kokolakis, Maria Karyda, (2022). BioPrivacy: Development of a Keystroke Dynamics Continuous Authentication System. In: Katsikas, S., et al. Computer Security. ESORICS 2021 International Workshops. ESORICS 2021. Lecture Notes in Computer Science(), vol 13106. Springer, Cham. https://doi.org/10.1007/978-3-030-95484-0_10
-Ioannis Stylios, Olga Thanou, Iosif Androulidakis, Elena Zaitseva, (2016). A Review of Continuous Authentication Using Behavioral Biometrics. ACM SEEDA-CECNSM 2016, 25-27 September, Kastoria Greece, Pages 73-80, ACM.
-Ioannis Stylios, Olga Thanou, Iosif Androulidakis, Elena Zaitseva, (2016). Communication Security & Cyberbullying: A Review of the Legal Issues. ACM SEEDA-CECNSM 2016, 25-27 September, Kastoria Greece, Pages 67-72, ACM.
-Ioannis Stylios, Kokolakis Spyros, Olga Thanou, Sothrios Chatzis, (2016). User’s Attitudes on Mobile Devices: Can Users’ Practices Protect Their Sensitive Data? 10th Mediterranean Conference on Information Systems (MCIS16), Cyprus.
-Ioannis Stylios, Sotirios Chatzis, Olga Thanou, Spyros Kokolakis, (2015). Mobile Phones & Behavioral Modalities: Surveying users’ practices. TELFOR 2015 International IEEE Conference. November 24-26, 2015, Belgrade, Serbia. IEEE.
-Ioannis Stylios, Vasileios Vlachos, Iosif Androulidakis. (2014). Performance Comparison of Machine Learning Algorithms for Diagnosis of Cardiotocograms with Class Inequality. TELFOR 2014 International IEEE Conference Record No.34903. November 25, 2014, SAVA Center, Belgrade, Serbia. p. 951–954. IEEE.
-Tzelepis Georgios, Skentos Athanasios, Stylios Ioannis, (2014). Study and environmental surveying on the Fire of Parnitha with Geographic Information Systems (GIS) for similar natural risk management in the future. 8th National Conference HellasGIs at the National Technical University of Athens.
-Iosif Androulidakis, Vasilios Christou, Nikolaos G. Bardis, Ioannis Stylios, (2009). Surveying users’ practices regarding mobile phones’ security features. ECC’09: Proceedings of the 3rd international conference on European computing conference, Tbilisi, Georgia, Pages: 25-30.
Grants/ Fellowships/ Awards:
-2020: Technology Transfer Plan Funding, Hellenic Ministry of Labour & Labour Employment Agency.
-2019: Scholarship of Excellence for Research, European Social Fund / University of the Aegean.
-2017: Scholarship of Excellence for Doctoral Dissertation, Hellenic Foundation for Research and Innovation (HFRI).
-2018: ACEin Incubation Services Award. 11th University Competition on Entrepreneurship and Innovation “Ennovation 2018”. Athens Center for Entrepreneurship and Innovation.
-2018: John & Mary Pappajohn Business Plan Award. John and Mary Pappajohn awards and the American College of Thessaloniki (ACT), School of Business.
-2016: Erasmus Mobility Grant for PhD Research. European Commission and the IKY (State Scholarship Foundation). Amount 1800€.
-2015: Erasmus Mobility Grant for Postgraduate Research Traineeship. European Commission and the IKY (State Scholarship Foundation). Amount 1800€.
-2009: Certificate of Appreciation: Certificate of Appreciation for a lecture in the European computing conference (ECC’09), Computing Intelligence (CI’09), Tbilisi, Georgia.
Teaching Experience:
-Adjunct Professor (full-time), University of Ioannina, Department of Informatics and Telecommunications.
-Adjunct Professor (full-time), University of the Aegean, School of Engineering, Department of Information and Communication Systems Engineering.
-Tutor & Author, University of Athens e-Learning.
-Tutor & Author, University of the Aegean e-Learning.
Personal Websites:
My University WebPage
Google Scholar