<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Todor Tagarev</style></author><author><style face="normal" font="default" size="100%">Salvatore Marco Pappalardo</style></author><author><style face="normal" font="default" size="100%">Nikolai Stoianov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Logical Model for Multi-Sector Cyber Risk Management</style></title><secondary-title><style face="normal" font="default" size="100%">Information &amp; Security: An International Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Critical Infrastructure</style></keyword><keyword><style  face="normal" font="default" size="100%">cyber risk assessment</style></keyword><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword><keyword><style  face="normal" font="default" size="100%">E-MAF</style></keyword><keyword><style  face="normal" font="default" size="100%">ECHO project</style></keyword><keyword><style  face="normal" font="default" size="100%">essential services</style></keyword><keyword><style  face="normal" font="default" size="100%">interdependencies</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2020</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2020</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">47</style></volume><pages><style face="normal" font="default" size="100%">13-26</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The increasing reliance on digital infrastructures makes whole sectors of the economy and public services vulnerable to attacks through cyberspace. Some progress has been made in understanding vulnerabilities and ways of reducing cyber risk at the sub-sectoral level. While the sectoral level remains a significant challenge, this study goes beyond, also addressing cyber risk resulting from the cross- and multi-sectoral interdependencies in a consistent logical model. The paper presents the scope of this logical model, outlines the problem of risk assessment, structured around the triplet &amp;ldquo;Threats &amp;ndash; Vulnerabilities &amp;ndash; Impact,&amp;rdquo; and the structuring of risk mitigation around types of risk reduction measures, the objective of decision-making on risk treatment, and the modalities of application. We provide examples of the implementation of the logical model, underlying the ECHO Multi-sector Assessment Framework, and conclude by emphasising the advantages the logical model and the framework provide.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><section><style face="normal" font="default" size="100%">13</style></section></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolai Stoianov</style></author><author><style face="normal" font="default" size="100%">Andrey Ivanov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Public Key Generation Principles Impact Cybersecurity</style></title><secondary-title><style face="normal" font="default" size="100%">Information &amp; Security: An International Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword><keyword><style  face="normal" font="default" size="100%">Miller-Rabin primality test improvement</style></keyword><keyword><style  face="normal" font="default" size="100%">Public Key Cryptography</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2020</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2020</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">47</style></volume><pages><style face="normal" font="default" size="100%">249-260</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Public key cryptography algorithms are based on number theory laws and principles. For every cryptography system one of the most important is-sues is the user’s key which he/she uses to encrypt the messages. That is the reason the key generation process is always fundamental for data protection and, since cryptography takes up more space in our daily lives, the public key generation principles are so important. In this article the authors discuss the Miller–Rabin primality test in its relation to the key generation process.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><section><style face="normal" font="default" size="100%">249</style></section></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Todor Tagarev</style></author><author><style face="normal" font="default" size="100%">George Sharkov</style></author><author><style face="normal" font="default" size="100%">Nikolai Stoianov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cyber Security and Resilience of Modern Societies: A Research Management Architecture</style></title><secondary-title><style face="normal" font="default" size="100%">Information &amp; Security: An International Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bio-integrated systems</style></keyword><keyword><style  face="normal" font="default" size="100%">Comprehensive approach</style></keyword><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword><keyword><style  face="normal" font="default" size="100%">drone</style></keyword><keyword><style  face="normal" font="default" size="100%">ERP</style></keyword><keyword><style  face="normal" font="default" size="100%">industrial control systems</style></keyword><keyword><style  face="normal" font="default" size="100%">R&amp;T management</style></keyword><keyword><style  face="normal" font="default" size="100%">resilience</style></keyword><keyword><style  face="normal" font="default" size="100%">systems of systems</style></keyword><keyword><style  face="normal" font="default" size="100%">UxVs</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year></dates><volume><style face="normal" font="default" size="100%">38</style></volume><pages><style face="normal" font="default" size="100%">93-108</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Advanced information and communications technologies (ICT) facilitate the increase of effectiveness and efficiency of defence and security organizations, governmental services, the economy, and quality of life, while at the same time providing opportunities for malicious actors to cause significant damage without exercising physical coercion. Policies for security and resilience of modern societies to threats and risks from the cyberspace account for foreseen cyber threats, their immediate impact on ICT infrastructure, consequent effects on critical services, as well as cascading effects across systems and infrastructures. This paper presents the architecture used to plan and, consequently, manage cybersecurity research in Bulgaria. It covers five application areas (information management systems; industrial control systems; unmanned and remotely piloted vehicles; bio-integrated systems; and cognitive processes and decision-making), the study of systems of systems, and support to the formulation and implementation of cybersecurity policy.</style></abstract><section><style face="normal" font="default" size="100%">93</style></section></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Lachezar Petrov</style></author><author><style face="normal" font="default" size="100%">Nikolai Stoianov</style></author><author><style face="normal" font="default" size="100%">Todor Tagarev</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Critical Information Infrastructure Protection Model and Methodology, Based on National and NATO Study</style></title><secondary-title><style face="normal" font="default" size="100%">Advances in Dependability Engineering of Complex Systems, Proceedings of the Twelfth International Conference on Dependability Problems and Complex Systems DepCoS-RELCOMEX</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">critical information infrastructure</style></keyword><keyword><style  face="normal" font="default" size="100%">cyber model</style></keyword><keyword><style  face="normal" font="default" size="100%">cyber security</style></keyword><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2016</style></year><pub-dates><date><style  face="normal" font="default" size="100%">July 2-6, 2016</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Brunow, Poland</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">National and international security, our financial, industrial as well as economic prosperity, healthcare system and national well-being as a whole are dependent on critical infrastructures, which could be described as highly interdependent. Many examples are available such as the national electrical grid, oil and natural gas systems, telecommunication and information networks, transportation networks, water systems, and banking and financial systems. Keeping them in reliable and secure state and study their dependencies is paramount for every government or organization. There is an urgent need of their classification. Creation and development of model and methodology which could describe their behaviors is going to make this world safer. The presented here model and based on it study and initial results are steps toward reliable and secure critical information infrastructure.</style></abstract></record></records></xml>