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  1. Article ; Online: Towards a Machine Learning Based Situational Awareness Framework for Cybersecurity: An SDN Implementation.

    Nikoloudakis, Yannis / Kefaloukos, Ioannis / Klados, Stylianos / Panagiotakis, Spyros / Pallis, Evangelos / Skianis, Charalabos / Markakis, Evangelos K

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 14

    Abstract: The ever-increasing number of internet-connected devices, along with the continuous evolution of cyber-attacks, in terms of volume and ingenuity, has led to a widened cyber-threat landscape, rendering infrastructures prone to malicious attacks. Towards ... ...

    Abstract The ever-increasing number of internet-connected devices, along with the continuous evolution of cyber-attacks, in terms of volume and ingenuity, has led to a widened cyber-threat landscape, rendering infrastructures prone to malicious attacks. Towards addressing systems' vulnerabilities and alleviating the impact of these threats, this paper presents a machine learning based situational awareness framework that detects existing and newly introduced network-enabled entities, utilizing the real-time awareness feature provided by the SDN paradigm, assesses them against known vulnerabilities, and assigns them to a connectivity-appropriate network slice. The assessed entities are continuously monitored by an ML-based IDS, which is trained with an enhanced dataset. Our endeavor aims to demonstrate that a neural network, trained with heterogeneous data stemming from the operational environment (common vulnerability enumeration IDs that correlate attacks with existing vulnerabilities), can achieve more accurate prediction rates than a conventional one, thus addressing some aspects of the situational awareness paradigm. The proposed framework was evaluated within a real-life environment and the results revealed an increase of more than 4% in the overall prediction accuracy.
    MeSH term(s) Awareness ; Computer Security ; Machine Learning ; Neural Networks, Computer
    Language English
    Publishing date 2021-07-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21144939
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: A Cybersecurity Culture Survey Targeting Healthcare Critical Infrastructures.

    Gioulekas, Fotios / Stamatiadis, Evangelos / Tzikas, Athanasios / Gounaris, Konstantinos / Georgiadou, Anna / Michalitsi-Psarrou, Ariadni / Doukas, Georgios / Kontoulis, Michael / Nikoloudakis, Yannis / Marin, Sergiu / Cabecinha, Ricardo / Ntanos, Christos

    Healthcare (Basel, Switzerland)

    2022  Volume 10, Issue 2

    Abstract: Recent studies report that cybersecurity breaches noticed in hospitals are associated with low levels of personnel's cybersecurity awareness. This work aims to assess the cybersecurity culture in healthcare institutions from middle- to low-income EU ... ...

    Abstract Recent studies report that cybersecurity breaches noticed in hospitals are associated with low levels of personnel's cybersecurity awareness. This work aims to assess the cybersecurity culture in healthcare institutions from middle- to low-income EU countries. The evaluation process was designed and performed via anonymous online surveys targeting individually ICT (internet and communication technology) departments and healthcare professionals. The study was conducted in 2019 for a health region in Greece, with a significant number of hospitals and health centers, a large hospital in Portugal, and a medical clinic in Romania, with 53.6% and 6.71% response rates for the ICT and healthcare professionals, respectively. Its findings indicate the necessity of establishing individual cybersecurity departments to monitor assets and attitudes while underlying the importance of continuous security awareness training programs. The analysis of our results assists in comprehending the countermeasures, which have been implemented in the healthcare institutions, and consequently enhancing cybersecurity defense, while reducing the risk surface.
    Language English
    Publishing date 2022-02-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2721009-1
    ISSN 2227-9032
    ISSN 2227-9032
    DOI 10.3390/healthcare10020327
    Database MEDical Literature Analysis and Retrieval System OnLINE

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