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    Wyświetlanie 1-4 z 4
    Tytuł:
    Network Topology Mutation as Moving Target Defense for Corporate Networks
    Autorzy:
    Rawski, Mariusz
    Tematy:
    cybersecurity
    MTD
    SDN
    NFV
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/227178.pdf  Link otwiera się w nowym oknie
    Opis:
    The paper introduces a topology mutation – the novel concept in Moving Target Defense (MTD). MTD is a new technique that represents a significant shift in cyber defense. Traditional cybersecurity techniques have primarily focused on the passive defense of static networks only. In MTD approach cyber attackers are confused by making the attack surface dynamic, and thus harder to probe and infiltrate. The emergence of Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technology has opened up new possibilities in network architecture management. The application of combined NFV and SDN technologies provides a unique platform for implementing MTD techniques for securing the network infrastructure by morphing the logical view of the network topology.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Email Phishing Detection with BLSTM and Word Embeddings
    Autorzy:
    Wolert, Rafał
    Rawski, Mariusz
    Tematy:
    phishing
    BLSTM
    word embeddings
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/27311939.pdf  Link otwiera się w nowym oknie
    Opis:
    Phishing has been one of the most successful attacks in recent years. Criminals are motivated by increasing financial gain and constantly improving their email phishing methods. A key goal, therefore, is to develop effective detection methods to cope with huge volumes of email data. In this paper, a solution using BLSTM neural network and FastText word embeddings has been proposed. The solution uses preprocessing techniques like stop-word removal, tokenization, and padding. Two datasets were used in three experiments: balanced and imbalanced, whereas in the imbalanced dataset, the effect of maximum token size was investigated. Evaluation of the model indicated the best metrics: 99.12% accuracy, 98.43% precision, 99.49% recall, and 98.96% f1-score on the imbalanced dataset. It was compared to an existing solution that uses the DL model and word embeddings. Finally, the model and solution architecture were implemented as a browser plug-in.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Interaction of polystyrene nanoplastic with lipid membranes
    Autorzy:
    Rawski, Michał
    Jamróz, Dorota
    Rajtar, Natan
    Kępczyński, Mariusz
    Łazarski, Grzegorz
    Romek, Marek
    Opis:
    As demonstrated in in vitro studies, polystyrene nanoplastics (PSNPs) are effectively internalized by various cells. All known mechanisms of PSNP internalization involve the initial step of their interaction with the cell membrane, highlighting the importance of understanding such interactions at the molecular level. Here we consider the effects of PSNPs obtained from disposable food packaging on zwitterionic lipid membranes, used as a model system for protein-free cell membranes. We combined microscopic imaging and unbiased atomistic molecular dynamics (MD) to investigate the behavior of PSNPs on the surface and inside the lipid membrane. Our results show that PSNPs are hydrated and have a high negative surface charge when dispersed in an aqueous media. The penetration of PS nanoparticles into the lipid bilayer requires the removal of water molecules at the nanoparticle–membrane interface, which is an effective barrier to the entry of PSNPs into its hydrophobic region. Overcoming this energy barrier by slightly inserting the PS nanoparticle into the polar region of the membrane leads to its rapid penetration into the center of the bilayer and coating its surface with lipid molecules. PS nanoplastics do not disaggregate after penetrating the lipid membrane, which affects the molecular structure of the bilayer. In addition, our MD simulations demonstrated that small-molecule additives (e.g., unreacted monomers) present in nanoplastics can be released into lipid membranes if they are located close to the nanoparticle surface. The outcomes of this study are important for understanding the passive uptake of nanoplastics by cells.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-4 z 4

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