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116 results on '"Papastergiou, Spyridon"'

1. Enhancing Malware Detection Through Machine Learning Using XAI with SHAP Framework

Author

Basheer, Nihala, Pranggono, Bernardi, Islam, Shareeful, Papastergiou, Spyridon, Mouratidis, Haralambos, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Carette, Jacques, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Stettner, Lukasz, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Rettberg, Achim, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, Maglogiannis, Ilias, editor, Iliadis, Lazaros, editor, Macintyre, John, editor, Avlonitis, Markos, editor, and Papaleonidas, Antonios, editor

Published
2024
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2. Synthetic Data Generation and Impact Analysis of Machine Learning Models for Enhanced Credit Card Fraud Detection

Author

Khaled, Ahmed Abdullah, Hasan, Md Mahmudul, Islam, Shareeful, Papastergiou, Spyridon, Mouratidis, Haralambos, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Carette, Jacques, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Stettner, Lukasz, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Rettberg, Achim, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, Maglogiannis, Ilias, editor, Iliadis, Lazaros, editor, Macintyre, John, editor, Avlonitis, Markos, editor, and Papaleonidas, Antonios, editor

Published
2024
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4. Cyber Security Incident Handling, Warning and Response System for the European Critical Information Infrastructures (CyberSANE)

Author

Papastergiou, Spyridon, Mouratidis, Haralambos, and Kalogeraki, Eleni-Maria

Subjects
Computer Science - Computers and Society
Abstract

This paper aims to enhance the security and resilience of Critical Information Infrastructures (CIIs) by providing a dynamic collaborative, warning and response system (CyberSANE system) supporting and guiding security officers and operators (e.g. Incident Response professionals) to recognize, identify, dynamically analyse, forecast, treat and respond to their threats and risks and handle their daily cyber incidents. The proposed solution provides a first of a kind approach for handling cyber security incidents in the digital environments with highly interconnected, complex and diverse nature.

Published
2020
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5. A Conceptual Model for Data-Driven Threat Analysis for Enhancing Cyber Security

Author

Alwaheidi, Mohammed K. S., Islam, Shareeful, Papastergiou, Spyridon, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Daimi, Kevin, editor, and Al Sadoon, Abeer, editor

Published
2022
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6. From product recommendation to cyber-attack prediction: Generating attack graphs and predicting future attacks

Author

Polatidis, Nikolaos, Pimenidis, Elias, Pavlidis, Michalis, Papastergiou, Spyridon, and Mouratidis, Haralambos

Subjects
Computer Science - Information Retrieval
Abstract

Modern information society depends on reliable functionality of information systems infrastructure, while at the same time the number of cyber-attacks has been increasing over the years and damages have been caused. Furthermore, graphs can be used to show paths than can be exploited by attackers to intrude into systems and gain unauthorized access through vulnerability exploitation. This paper presents a method that builds attack graphs using data supplied from the maritime supply chain infrastructure. The method delivers all possible paths that can be exploited to gain access. Then, a recommendation system is utilized to make predictions about future attack steps within the network. We show that recommender systems can be used in cyber defense by predicting attacks. The goal of this paper is to identify attack paths and show how a recommendation method can be used to classify future cyber-attacks in terms of risk management. The proposed method has been experimentally evaluated and validated, with the results showing that it is both practical and effective.

Published
2018

7. Cyber Supply Chain Threat Analysis and Prediction Using Machine Learning and Ontology

Author

Yeboah-Ofori, Abel, Mouratidis, Haralambos, Ismai, Umar, Islam, Shareeful, Papastergiou, Spyridon, Rannenberg, Kai, Editor-in-Chief, Soares Barbosa, Luís, Editorial Board Member, Goedicke, Michael, Editorial Board Member, Tatnall, Arthur, Editorial Board Member, Neuhold, Erich J., Editorial Board Member, Stiller, Burkhard, Editorial Board Member, Tröltzsch, Fredi, Editorial Board Member, Pries-Heje, Jan, Editorial Board Member, Kreps, David, Editorial Board Member, Reis, Ricardo, Editorial Board Member, Furnell, Steven, Editorial Board Member, Mercier-Laurent, Eunika, Editorial Board Member, Winckler, Marco, Editorial Board Member, Malaka, Rainer, Editorial Board Member, Maglogiannis, Ilias, editor, Macintyre, John, editor, and Iliadis, Lazaros, editor

Published
2021
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11. Adoption of Deep-Learning Models for Managing Threat in API Calls with Transparency Obligation Practice for Overall Resilience.

Author

Basheer, Nihala, Islam, Shareeful, Alwaheidi, Mohammed K. S., and Papastergiou, Spyridon

Subjects
DEEP learning, TRAFFIC flow, APPLICATION software, USER experience, SECURITY systems, APPLICATION program interfaces
Abstract

System-to-system communication via Application Programming Interfaces (APIs) plays a pivotal role in the seamless interaction among software applications and systems for efficient and automated service delivery. APIs facilitate the exchange of data and functionalities across diverse platforms, enhancing operational efficiency and user experience. However, this also introduces potential vulnerabilities that attackers can exploit to compromise system security, highlighting the importance of identifying and mitigating associated security risks. By examining the weaknesses inherent in these APIs using security open-intelligence catalogues like CWE and CAPEC and implementing controls from NIST SP 800-53, organizations can significantly enhance their security posture, safeguarding their data and systems against potential threats. However, this task is challenging due to evolving threats and vulnerabilities. Additionally, it is challenging to analyse threats given the large volume of traffic generated from API calls. This work contributes to tackling this challenge and makes a novel contribution to managing threats within system-to-system communication through API calls. It introduces an integrated architecture that combines deep-learning models, i.e., ANN and MLP, for effective threat detection from large API call datasets. The identified threats are analysed to determine suitable mitigations for improving overall resilience. Furthermore, this work introduces transparency obligation practices for the entire AI life cycle, from dataset preprocessing to model performance evaluation, including data and methodological transparency and SHapley Additive exPlanations (SHAP) analysis, so that AI models are understandable by all user groups. The proposed methodology was validated through an experiment using the Windows PE Malware API dataset, achieving an average detection accuracy of 88%. The outcomes from the experiments are summarized to provide a list of key features, such as FindResourceExA and NtClose, which are linked with potential weaknesses and related threats, in order to identify accurate control actions to manage the threats. [ABSTRACT FROM AUTHOR]

Published
2024
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12. Cyber Security Incident Handling, Warning and Response System for the European Critical Information Infrastructures (CyberSANE)

Author

Papastergiou, Spyridon, Mouratidis, Haralambos, Kalogeraki, Eleni-Maria, Barbosa, Simone Diniz Junqueira, Editorial Board Member, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Kotenko, Igor, Editorial Board Member, Yuan, Junsong, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Macintyre, John, editor, Iliadis, Lazaros, editor, Maglogiannis, Ilias, editor, and Jayne, Chrisina, editor

Published
2019
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17. Modeling SCADA Attacks

Author

Kalogeraki, Eleni-Maria, Polemi, Nineta, Papastergiou, Spyridon, Panayiotopoulos, Themis, Kacprzyk, Janusz, Series editor, Yang, Xin-She, editor, Nagar, Atulya K., editor, and Joshi, Amit, editor

Published
2018
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19. Exploring Cyber-Security Issues in Vessel Traffic Services

Author

Kalogeraki, Eleni Maria, Papastergiou, Spyridon, Polemi, Nineta, Douligeris, Christos, Panayiotopoulos, Themis, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Liu, Weiru, editor, Giunchiglia, Fausto, editor, and Yang, Bo, editor

Published
2018
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23. Business and Threat Analysis of Ports’ Supply Chain Services

Author

Papastergiou, Spyridon, Polemi, Nineta, Papagiannopoulos, Ioannis, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Tryfonas, Theo, editor, and Askoxylakis, Ioannis, editor

Published
2015
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24. CYSM: An Innovative Physical/Cyber Security Management System for Ports

Author

Papastergiou, Spyridon, Polemi, Nineta, Karantjias, Athanasios, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Tryfonas, Theo, editor, and Askoxylakis, Ioannis, editor

Published
2015
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30. Modeling SCADA Attacks

Author

Kalogeraki, Eleni-Maria, primary, Polemi, Nineta, additional, Papastergiou, Spyridon, additional, and Panayiotopoulos, Themis, additional

Published
2017
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32. SWEB: An Advanced Mobile Residence Certificate Service

Author

Papastergiou, Spyridon, Polemi, Despina, Douligeris, Christos, Akan, Ozgur, Series editor, Bellavista, Paolo, Series editor, Cao, Jiannong, Series editor, Dressler, Falko, Series editor, Ferrari, Domenico, Series editor, Gerla, Mario, Series editor, Kobayashi, Hisashi, Series editor, Palazzo, Sergio, Series editor, Sahni, Sartaj, Series editor, Shen, Xuemin (Sherman), Series editor, Stan, Mircea, Series editor, Xiaohua, Jia, Series editor, Zomaya, Albert, Series editor, Coulson, Geoffrey, Series editor, Sideridis, Alexander B., editor, and Patrikakis, Charalampos Z., editor

Published
2010
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34. A Secure e-Ordering Web Service

Author

Polemi, Despina, Papastergiou, Spyridon, Suomi, Reima, editor, Cabral, Regis, editor, Hampe, J. Felix, editor, Heikkilä, Arto, editor, Järveläinen, Jonna, editor, and Koskivaara, Eija, editor

Published
2006
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44. Deliverable D7.1 - Evaluation Methodology

Author

Papastergiou, Spyridon, Karantjias, Athanasios, Polemi, Nineta, Douligeris, Christos, Chatzikou, Menia, Karalis, Apostolis, Gouvas, Panagiotis, Schauer, Stefan, Pavlidis, Michalis, Mouratidis, Haralambos, and Fiedler, Ralf

Published
2017
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