<?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%">George Sharkov</style></author><author><style face="normal" font="default" size="100%">Christina Todorova</style></author><author><style face="normal" font="default" size="100%">Georgi Koykov</style></author><author><style face="normal" font="default" size="100%">Georgi Zahariev</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A System-of-Systems Approach for the Creation of a Composite Cyber Range for Cyber/Hybrid Exercising</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%">Crisis Response</style></keyword><keyword><style  face="normal" font="default" size="100%">cyber range</style></keyword><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword><keyword><style  face="normal" font="default" size="100%">Hybrid Security</style></keyword><keyword><style  face="normal" font="default" size="100%">resilience</style></keyword><keyword><style  face="normal" font="default" size="100%">Standard Operating Procedures</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year></dates><volume><style face="normal" font="default" size="100%">50</style></volume><pages><style face="normal" font="default" size="100%">129-148 </style></pages><abstract><style face="normal" font="default" size="100%">&lt;p style=&quot;margin-left:20.15pt;&quot;&gt;The current cybersecurity landscape is conducive to the enhancement of the traditional cyber-exercising paradigm and instruments. Considering the complex nature of the cyberattacks and their cascading impact, moving away from purely technical or entirely decision-making exercises is becoming paramount for realistic exercising of emergency response. Complex cyber-hybrid scenarios, exercising effective collaboration at the technical, operational, and higher decision-making levels, are increasingly employed to prepare to face emerging hybrid threats. Such scenarios simulate seemingly independent incidents in different locations, businesses, or systems that may quickly escalate to a sectoral or a national crisis. Unfortunately, such diverse scenarios remain inaccessible due to the lack of proper simulation infrastructure and expertise to adapt them to various contexts. The current contribution presents the authors&amp;rsquo; experience in designing a Composite Cyber Range, following a Systems-of-Systems approach for the dynamic activation or incorporation of playgrounds and on-the-run integration of custom-made emulation or overlay ranges to support an &amp;ldquo;exercise-as-a-service&amp;rdquo; model for the provision of adequate and accessible cyber-hybrid mechanisms for crisis response training and preparation.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue></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%">Andon Lazarov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cyber Protection of Critical Infrastructures, Novel Big Data and Artificial Intelligence Solutions</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%">artificial intelligence</style></keyword><keyword><style  face="normal" font="default" size="100%">big data</style></keyword><keyword><style  face="normal" font="default" size="100%">Critical Infrastructure Protection</style></keyword><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword><keyword><style  face="normal" font="default" size="100%">ICT security</style></keyword><keyword><style  face="normal" font="default" size="100%">IoT</style></keyword><keyword><style  face="normal" font="default" size="100%">machine learning</style></keyword><keyword><style  face="normal" font="default" size="100%">resilience</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%">7-10</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This editorial article introduces the reader to the Second International Scientific Conference “Digital Transformation, Cyber Security and Resilience,” DIGILIENCE 2020, and summarises the results from five of its sessions: Protecting Critical Infrastructures from Cyberattacks; Security Implications and Solutions for IoT Systems; Big Data and Artificial Intelligence for Cybersecurity; Secure Communication and Information Protection; and Advanced ICT Security Solutions.</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><section><style face="normal" font="default" size="100%">7</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%">George Sharkov</style></author><author><style face="normal" font="default" size="100%">Yavor Papazov</style></author><author><style face="normal" font="default" size="100%">Christina Todorova</style></author><author><style face="normal" font="default" size="100%">Georgi Koykov</style></author><author><style face="normal" font="default" size="100%">Georgi Zahariev</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MonSys: A Scalable Platform for Monitoring Digital Services Availability, Threat Intelligence and Cyber Resilience Situational Awareness</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%">cyber risk</style></keyword><keyword><style  face="normal" font="default" size="100%">cyber threat</style></keyword><keyword><style  face="normal" font="default" size="100%">early warning</style></keyword><keyword><style  face="normal" font="default" size="100%">resilience</style></keyword><keyword><style  face="normal" font="default" size="100%">scalability</style></keyword><keyword><style  face="normal" font="default" size="100%">Situational awareness</style></keyword><keyword><style  face="normal" font="default" size="100%">vulnerability analysis</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%">46</style></volume><pages><style face="normal" font="default" size="100%">155-167</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Today’s digital society implies interconnectivity between the online operations of different sectors of everyday life and economy alike. As a consequence, malicious activities targeted towards a single online service could hurt entire indus¬tries and multiple private and public organizations. This interdependence be¬tween online services and economic units is an imperative for targeted efforts ensuring the integrity and availability of individual systems and complex systems-of-systems alike. This article presents MonSys, a flexible, robust, and scalable monitoring platform, implement-ed as a cloud-based service and an on-premise solution, specifically de-signed to ad¬dress the need for ensuring service availability at an individual level. MonSys provides several standardized services availability checks, such as web-based services from multiple geographical locations, and a flexible platform and tools for defining customized complex services. Particular attention is paid to the processes of metrics collection, processing, storage, and querying. MonSys can perform custom availability checks for different types of infrastructures, such as various black-box, grey-box, and white-box availability checks/metrics. The article presents also results from piloting the platform on performance and scalability and options for integration in early-warning and intelligent signaling, based on behavioral pattern analysis and predictive simulations.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><section><style face="normal" font="default" size="100%">155</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%">Todor Tagarev</style></author><author><style face="normal" font="default" size="100%">George Sharkov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Computationally intensive functions in designing and operating distributed cyber secure and resilient systems</style></title><secondary-title><style face="normal" font="default" size="100%">20th International Conference on Computer Systems and Technologies, CompSysTech 2019</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">agility</style></keyword><keyword><style  face="normal" font="default" size="100%">Cybersecurity</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed systems</style></keyword><keyword><style  face="normal" font="default" size="100%">high-performance computing</style></keyword><keyword><style  face="normal" font="default" size="100%">operations</style></keyword><keyword><style  face="normal" font="default" size="100%">policy</style></keyword><keyword><style  face="normal" font="default" size="100%">resilience</style></keyword><keyword><style  face="normal" font="default" size="100%">risk management</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2019</style></year><pub-dates><date><style  face="normal" font="default" size="100%"> 21 June 2019</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">University of RuseRuse</style></publisher><pub-location><style face="normal" font="default" size="100%">Bulgaria</style></pub-location><volume><style face="normal" font="default" size="100%">ACM International Conference Proceeding Series</style></volume><pages><style face="normal" font="default" size="100%"> 8-18</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Increasing incorporation of advanced information technologies makes business and public organisations more effective and efficient, while often introducing exploitable vulnerabilities. The efficient provision of security of interconnected, and interdependent, processes and sectors against cyberattacks requires deep understanding of vulnerabilities, exposure, potential negative impact, as well as the contribution existing and emerging organisational and technological solutions will potentially have on preventing attacks, reducing vulnerabilities, protecting digital infrastructures, response and recovery, and resilience. Such understanding will allow minimisation of risks against a spectrum of plausible cyber threats and reducing negative consequences of one or a series of cyberattacks.&lt;/p&gt;&lt;p&gt;Due to the complexity of the problem, the effective implementation of a number of functions and tasks in designing and operating distributed cyber secure and resilient systems require significant computational resources. This paper outlines six high-level, computationally demanding functions. The first three relate to the formulation and implementation of cybersecurity policy: understanding risk; planning and implementing cybersecurity measures; and continuous adaptation to the changing technological, threat and policy landscape. The other three functions are operational: situational awareness, including detection of cyberattacks and hybrid malicious activities; operational decision making, e.g. selecting a course of action under attack; and cyber forensics.&lt;/p&gt;</style></abstract></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></records></xml>