Quantitative Systems Modeling for Critical Infrastructure Predictions in Climate Change: A National Defense Framework

The article analyzes the existing legal mechanisms for managing critical information infrastructure in Ukraine. The instruments for their improvement are proposing in this article. An important component of critical infrastructure is its information component – a critical information infrastructure. The sphere of protection of critical information infrastructure in Ukraine is at the initial stage of formation. The current legislation defines only certain objects of socio-economic sphere, in which extraordinary events can lead to socially dangerous consequences. In view of the fact, that the term “critical information infrastructure” does not having a consistent interpretation in different countries, we propose our opinion. “Critical information infrastructure is a system of information management of critical facilities and information and communication networks that provide defense capabilities and security of public and private institutions, whose operation may flow to the national security of Ukraine” (KII). In the KII we can identified information and network components. Information environment of KII is a system for information management of critical objects, including computing and information resources that form automated control systems (ACS). The network component of KII consists of a set of telecommunication devices, communication lines and network equipment, systems of open protocols for the exchange of information between elecommunication devices, global system of digital addresses and digital identifiers, software. The Internet network can be considered as a technological add-on over a telecommunication network that provides the provision of data transmission and processing services (e-mail, teleconferencing, file transfer, access to computing and information systems in local area networks). The main threat to the safety of ACS of critical information infrastructure objects is targeted actions on information systems, information and telecommunication networks by software and hardware. KII legal security include two main components – national and international. The national component may be forming by a set of principles, legal institutions and norms, which are enshrined in the national legislation regulating public relations in Ukraine in the area of counteracting the security threats of the ACS of critical objects. In order to protect the most important objects of KII, it is necessary to identify these objects. The current legislation defines such categories of objects, for which special conditions for ensuring their protection and functioning are established. Some of them, in whole or in part, may be classifying as objects of critical infrastructure. The specificity of providing information security was reflecting in such Ukraine laws like “On the Fundamentals of National Security of Ukraine”, “On the Concept of the National Program of Informatization”, “On the National Program of Informatization”. As well as the Concept of Development of the Security and Defense Sector of Ukraine, the National Security Strategy of Ukraine, the Strategy of Cybersecurity Of Ukraine. The National Security Strategy identifies actual threats to national security and sets priorities for information security, cyber security and security of information resources and critical infrastructure. At the same time, the implementation of the state policy in the field of security of KII requires the further development of legal principles and norms governing the relevant social relations, that is, the national component of the legal security of KII. Ukraine should ensure the establishment of a nationwide system for assessing risks and threats to critical infrastructure, and after the legislative definition of the main terms, the implementation of the Identification of Critical Information Infrastructure objects. Identification of objects of critical information infrastructure can be accomplishing by introducing the certification of objects of critical information infrastructure. Such passports must contain general data about the facility, data on the main sources of danger, data on hazardous natural conditions, technological processes and response to threats. The international component of the legal security of KII provides for the regulation of a set of principles and norms defined by international treaties and recognized by the state, regulating issues of international cooperation in this area. Ukraine has signed the Convention on Cybercrime together with the member states of the Council of Europe and other States. It is aiming at stopping actions against the confidentiality, integrity and availability of computer systems, networks and computer data, as well as abusing such systems, networks and data by installing the criminal responsibility for such behavior, the provision of powers sufficient to combat criminal offenses, and the conclusion of agreements on rapid and reliable international cooperation. In addition, the plan of measures for 2017 on implementation of the Cybersecurity Strategy of Ukraine provides for the implementation of Directive 2008/114/EC on the protection of critical infrastructure, in particular on cybersecurity and cyber defense of critical infrastructure objects. Development of the system of international information security, the following main groups of international relations that requirenormative legal regulation within the framework of the legal security of KII: definition of the boundaries of the national KII in the global information and communication infrastructure and fixing signs of computer incidents in the control system of critical objects information infrastructure. The absence of generally recognized borders of state sovereignty of States in this space is a significant obstacle to the application of international law to the actions of other states. In particular, this impedes the establishment of limits of responsibility of states for violating the security of the KII and organizing international cooperation in the field of countering computer crime. The urgency of the legislative consolidation of signs of computer incidents in the automated control system of critical information infrastructure objects suggests the widespread use of the concept of “incident” in international law. An incident in cyberspace usually associated with a violation of the functioning of the components of cyberspace – an electronic collection environment and automated processing of information that determines the processes of the implementation of these operations, as well as information systems and automated control systems. The essence of the general definition of the “international incident” in the field of KII will be determining, firstly, by the nature of international relations between states that are violating by the “incident”. This event may be the result of unforeseen actions of the state, including actions that harm the interests of public bodies of one or more states, or, conversely, be one of many intentional but minor provocations carried out by agents of one state against another state. Given that international relations in the field of incidents in the field of KII are not regulating by international treaties, the main and, in fact, the only source of international law in this case serves as an international custom, however, its application to the sphere of KII is accompanying by considerable difficulties. For Ukraine, it is possible to introduce the positive experience of other states in the security of the KII. In particular, the problem of security of information technologies has been enshrined in the international standard ISO / IEC 15408 “General criteria for assessing the safety of information technology”.

The increasing sophistication of cyber threats targeting U.S. national security, critical infrastructure, and financial systems necessitates a proactive, AI-driven cybersecurity strategy. Traditional security models relying on perimeter-based defenses are insufficient against state-sponsored attacks, ransomware, and advanced persistent threats (APTs). This paper explores the transformative potential of cloud-based artificial intelligence (AI) and Zero Trust Architecture (ZTA) in fortifying U.S. cybersecurity and mitigating foreign threats. Cloud-based AI enhances threat detection, real-time anomaly identification, and automated incident response by leveraging machine learning (ML), deep neural networks, and behavioral analytics. These models analyze vast amounts of network telemetry data, endpoint activities, and encrypted communications to detect evolving attack vectors with unprecedented accuracy. By incorporating federated learning and AI-driven deception techniques, cybersecurity frameworks can proactively predict and neutralize cyber threats before they materialize. Zero Trust Architecture (ZTA) further strengthens national security by enforcing continuous authentication, micro-segmentation, and least-privilege access controls. Unlike traditional models, ZTA operates under the assumption that no entity—internal or external—should be inherently trusted. By integrating cloud-native security solutions with identity-centric AI models, organizations can mitigate insider threats, secure critical infrastructure, and ensure compliance with federal cybersecurity directives. This paper examines real-world applications of AI and ZTA in national defense, critical infrastructure protection, and supply chain security, addressing implementation challenges, ethical concerns, and future research directions. The findings highlight how cloud-driven AI and Zero Trust policies are essential in safeguarding the U.S. against cyber warfare, foreign espionage, and next-generation cyber threats.

As new technologies such as the Internet of Things (IoT) are integrated into Critical National Infrastructures (CNI), new cybersecurity threats emerge that require specific security solutions. Approaches used for analysis include the modelling and simulation of critical infrastructure systems using attributes, functionalities, operations, and behaviours to support various security analysis viewpoints, recognising and appropriately managing associated security risks. With several critical infrastructure protection approaches available, the question of how to effectively model the complex behaviour of interconnected CNI elements and to configure their protection as a system-of-systems remains a challenge. Using a systematic review approach, existing critical infrastructure protection approaches (tools and techniques) are examined to determine their suitability given trends like IoT, and effective security modelling and analysis issues. It is found that empirical-based, agent-based, system dynamics-based, and network-based modelling are more commonly applied than economic-based and equation-based techniques, and empirical-based modelling is the most widely used. The energy and transportation critical infrastructure sectors reflect the most responsive sectors, and no one Critical Infrastructure Protection (CIP) approach – tool, technique, methodology or framework – provides a ‘fit-for-all’ capacity for all-round attribute modelling and simulation of security risks. Typically, deciding factors for CIP choices to adopt are often dominated by trade-offs between ‘complexity of use’ and ‘popularity of approach’, as well as between ‘specificity’ and ‘generality’ of application in sectors. Improved security modelling is feasible via; appropriate tweaking of CIP approaches to include a wider scope of security risk management, functional responsiveness to interdependency, resilience and policy formulation requirements, and collaborative information sharing between public and private sectors.

The article presents the current problems of protecting Ukraine’s critical infrastructure, current threats to its security and the need to organise proper counteraction under martial law. Threats to critical infrastructure include factors that can actually or potentially harm the stability of its operation, functionality, integrity, resilience or lead to its destruction. The purpose of the article is to create an up-to-date threat model that formalises the likely impacts on Ukraine’s critical infrastructure, which will improve the effectiveness of its protection. The scientific novelty of the article is that it examines the actual needs and problematic issues of forming a modern model of threats to critical infrastructure, primarily in the context of the ongoing full-scale military aggression of the russian federation against Ukraine. Creating a threat model is defined for critical infrastructure as a necessity to ensure effective protection of its facilities. The formation of a basic threat model for critical infrastructure facilities, which should include related models of the facility, situation and intruder, is currently an important element of the algorithm for solving this problem. The basic model of threats to critical infrastructure is the framework on which the state determines who and what it needs to protect itself from at the national level. However, Ukrainian legislation currently does not provide for the need to develop a model of threats to the national critical infrastructure, which negatively affects the state of its security and resilience. The perspective measures that will contribute to both the stable functioning of critical infrastructure facilities and ensure their proper protection are outlined: enshrining in Ukrainian legislation the need to develop a model of threats to critical infrastructure, adopting regulations on standardisation of risk management processes for critical infrastructure in order to prevent threats, and more.

The concept of societal resilience – the central concept of the National Defence Strategy – is, to a certain degree, not only semantically, but especially pragmatically ambiguous, as the concept has not been operationalised in the literature, on the one hand, and the state societal resilience, implementable through formal, non-formal and informal education, has not benefitted from adequate levers for application, on the other hand. The recent educational reform, achieved through the two laws, on pre-university education and on higher education, adopted in 2023, does not directly contribute to societal resilience. Under these circumstances, of an inadequately designed security education and of a pragmatic ambiguity of the strategy, which means that the communication intentions (obligation, recommendation, suggestion) are not clarified, it is necessary to exceed the classical normative framework that regulates the national educational system and to design the education-resilience binomial as critical national infrastructure. Resilience, coming from the field of safety culture studies, can be considered intangible critical infrastructure, which needs a tangible system defined or possibly defined in the Romanian legislation regarding critical infrastructure, so that it can trigger the mechanism for implementing the projection of the National Defence Strategy. The present article contributes to the identification of possible projective directions of the education-resilience binomial as critical infrastructure.

The link between national security and the protection of critical infrastructure is vital to the progress of any society and its proper social functioning. The term critical infrastructure was developed by the United States in the 1990s and it has evolved in time; nowadays, most of the current definitions include the security dimension in their content. Along with its many benefits, the technological advancement has brought with it the diversification of threats that could lead to the malfunctioning of critical infrastructures. The new weapons of the 21st century and the new asymmetric threats constitute real dangers to the good functioning of every critical infrastructure. Once they may be interrupted, the normal functioning of the whole society would be endangered because of the domino effects it causes. In this article we will look at how the link between critical infrastructure and national security is reflected in national regulations and crisis scenarios, highlighting the main strengths and the existing legislative gaps along with discussing their applicability.

A special legislation on criminal liability for offences against critical infrastructure objects is currently under development in Ukraine. The Cabinet of Ministers of Ukraine adopted the Concept for the development of a state system for critical infrastructure protection. The paper considers this legal area with regard to objects in the nuclear industry in the general context of critical infrastructure protection. It provides the current state in the legal regulation of fundamentals of criminal liability for offences against the critical infrastructure objects in the nuclear industry. The issue on the sufficiency and appropriateness of the existing level of such a liability is discussed further. The paper presents the list of some main critical infrastructure objects in accordance with the regulatory documents in the sphere of critical infrastructure protection and their classification. In addition, such concepts as “critical infrastructure” (relatively new notion in the national legislation), “unlawful intrusion”, “computer crimes”, “critical information infrastructure” and other concepts important to the nuclear industry were considered in this research. The notions presented in different regulatory documents were analyzed. The paper emphasizes that the legislation of Ukraine does not currently present special (separate) standards on the criminal liability for offences against critical infrastructure objects. Some promising issues related to fundamentals of the criminal liability and protection of critical infrastructure objects in the nuclear industry were also considered. The research involves the prospect of further development of a special law to define the area for improving relevant legislation on general regulation of these issues. The paper also stresses on the need to introduce some changes to the Criminal Code of Ukraine with respect to certain articles of section XIV.

Modern society cannot evolve and operate without critical infrastructures, most of which have become dependent of internet connectivity for a variety of information management, communications, and control functions. In many cases, information and communications technology has become all-embracing, connecting other infrastructures referred to as critical information infrastructure. The increased interdependency has made critical infrastructure particularly vulnerable to natural hazards, technical problems, cyber-attacks, and terrorism. The topic of critical information infrastructure protection thus is attracting increasing attention and is progressively considered to be an integral part of national sustainability strategies. This publication delivers best practices on this topic derived from case studies and the status quo in the region and proposes recommendations for the further development of a delineated framework.

: The President's Commission on Critical Infrastructure Protection was the first national effort to address the vulnerabilities created by the revolution in information technology. The Commission was established in July 1996 and rendered its report in October 1997. The results of the report were alarming. The nation's critical infrastructures had become increasingly automated, interlinked, and relied heavily on computer controlled systems. Moreover, the Commission found a wide spectrum of threats, increasing vulnerabilities in both private sector and government systems, and no national focus or policy. After reviewing the report, President Clinton issued Presidential Decision Directive 63 (PDD 63), which became the national policy for Critical Infrastructure Protection, and Information Assurance. This paper will examine the adequacy and effectiveness of PDD 63. It will focus on how clearly the policy states objectives and acceptable risks. It will address the policy's consistency with the National Security Strategy. Since more than 90 percent of the information systems that the government uses belong to the private sector, the paper will examine the private sector's role in the policy's implementation. Finally, with the current trend toward economic globalization, the issue of foreign policy cooperation must be addressed as well.

Nearly 2 decades ago, James Woolsey ~later to become Director of the CIA! and Robert Kupperman ~then Senior Advisor to the Center for Strategic and International Studies—CSIS! warned that this nation’s infrastructures were unexpectedly and alarmingly vulnerable to terrorist attack, and they suggested efforts to protect them. Although their main focus was on the electric power infrastructure, their work and conclusions were of broader scope. However, no one paid much attention. In the mid 1990s, President Bill Clinton established the President’s Commission on Critical Infrastructure Protection ~PCCIP! under the chairmanship of retired Air Force General Robert T. Marsh. In its 15 months of work, the PCCIP examined threats to eight critical infrastructures, examined their vulnerabilities, designed a national strategy for critical infrastructure assurance, and developed a plan to implement the strategy. This time the Administration was listening. Clinton signed Presidential Decision Directive 63 ~PDD 63! in May, 1998, which set in motion an extensive multiagency program, coordinated by the White House, to pursue PCCIP’s recommended actions, but Congress failed to see the urgency and funded only bits and pieces of the program. September 11, 2001 focused everyone’s attention on critical infrastructure. We now have a bevy of presidential decisions and orders, as well as several key pieces of legislation dealing at least in part with our critical infrastructures. Most recently, we have a new Department of Homeland Security, although its name may change, and the commitment of substantial budgetary resources. The stage is now set for actually improving the security of these critical infrastructures. The PCCIP had identified a set of objectives to be met in protecting our critical infrastructures. The Administration accepted them. Congress also has, at least implicitly, accepted them. Are we achieving them? Here’s a summary of where we stand on some of the most important elements, as of this writing. There is no attempt at complete and comprehensive coverage. Many important efforts are not mentioned, simply to keep the paper within manageable proportions.

In 2008, a new principle of spatial planning was added to the German Federal Spatial Planning Act. It demands critical infrastructure protection (CIP) be taken into account in all spatial planning activities. Since the term 'critical infrastructure' is quite young, this problem has not yet been explicitly treated in spatial planning activities. This paper presents results from a qualitative analysis of available regional spatial structure plans and from a survey of all regional spatial planning authorities in Germany. It shows that regional spatial planning has marginally dealt with CIP related questions like infrastructure reliability and spatial exposure in the past. However, the CIP concept, in addition to regional spatial planning methods and procedures, needs comprehensive efforts to approach and synchronise both public functions.

Critical Infrastructures (CIs) are vital backbones of modern societies and are increasingly depending on Information Technology (IT) and communication networks. Due to the increasing IT penetration, CIs are more and more connected with each other, with advantages and disadvantages. Due to this interconnection, CIs can provide their services more cost-efficiently. On the other hand, in case of disturbances, their behaviour cannot ever be mastered, as the large blackouts in the USA and Europe have shown. The increasing complexity and manifold conventional and emerging threats jeopardise the system of mutually dependent CIs. Critical Infrastructure Protection (CIP) attracts notice more and more from the public. Modelling and Simulation (M&S) expand now into the analysis and planning of processes and procedures of infrastructures. This paper gives an overview of the recent research in the field of CIP, where the EU project Integrated Risk Reduction of Information-based Infrastructure Systems (IRRIIS) is used as a role model.

The contemporary hybrid security environment positions critical infrastructure as both a strategic asset and a potential vulnerability for national security. The growing interdependence among infrastructure sectors increases the risk of systemic disruptions with broad social and economic consequences. Evidence from recent armed conflicts, including the war in Ukraine, confirms the significance of infrastructure facilities as targets of combined and hybrid operations. The aim of the present study is to assess the level of awareness among students at the Rakovski National Defence College regarding the resilience of critical infrastructure and its impact on national security. The research employs a qualitative design based on semi-structured questionnaires administered to a sample of 23 participants. The analysis focuses on determining the level of knowledge, the assessment of the condition and functioning of national infrastructure systems, as well as perceived risks and vulnerabilities. The findings indicate a relatively high level of awareness concerning the strategic importance of infrastructure systems, while also identifying deficiencies related to resilience assessment and interinstitutional coordination. On this basis, recommendations are formulated to enhance education and professional training, and to strengthen the integrated civil-military approach to risk management. The resilience of critical infrastructure is conceptualized as a dynamic process requiring systematic prevention, protection, and recovery measures in the context of hybrid threats. The results of the study indicate that Bulgaria's national critical infrastructure has clear regulatory frameworks and certain protective mechanisms in place, but practical effectiveness remains limited. The main challenges are related to the human factor, inter-agency coordination, preparedness, and vulnerability to hybrid and multi-domain threats. The international environment and regional conflicts significantly increase these risks. An integrated approach is required, including updating regulatory documents, enhancing technical and cyber protection, conducting regular exercises, facilitating information sharing, and promoting cross-sector cooperation, in order to ensure the resilience of critical infrastructure and the security of the state.

Critical Infrastructure (CI) is the term used to describe assets that are of utmost importance, or in other words, essential in the functioning of an environment. Societies depend on their critical infrastructure in order to maintain and continuously improve on their standards of living. As these systems increasingly depend on cyber-technology, their security on networked environments become crucial. The modern smart grid has become part of CI through the enhancement it provides to regular electricity grid infrastructure. The application of biologically inspired systems to ensure security in aspects such as intrusion detection, access control, anomaly detection and others has become a widely researched field in when dealing with networked computing systems. This paper discusses the importance of CI, the application of artificial immune systems in the protection of CI information systems and proposes a new model for smart grid protection using biologically inspired concepts.

This study addresses the critical need to integrate robust cybersecurity practices within accounting frameworks, particularly focusing on safeguarding financial data within national critical infrastructure sectors. Given the escalating frequency and severity of cyber threats targeting vital sectors such as finance, energy, healthcare, and public infrastructure, traditional accounting information systems (AIS) have become insufficiently equipped to manage contemporary cybersecurity risks. Employing a qualitative research approach comprising a systematic literature review and expert interviews, this manuscript develops an innovative Cybersecurity Accounting Framework (CAF). The framework strategically combines advanced cybersecurity controls, continuous auditing methodologies, and regulatory compliance automation into accounting processes. Empirical validations through illustrative case studies across multiple critical infrastructure sectors reveal substantial benefits, including significant reductions in cybersecurity incidents, enhanced financial data integrity, improved regulatory compliance efficiency, and increased stakeholder trust. The research further outlines critical policy implications, providing strategic recommendations for policymakers, regulatory bodies, and accounting standards setters. It also highlights future roles for accounting professionals as cybersecurity assurance experts. Limitations identified in the study pave the way for future quantitative analyses, sector-specific framework customizations, comparative international evaluations, and integration of emerging technologies. Overall, this manuscript contributes significantly to academic literature and practical advancements in cybersecurity, accounting, and critical infrastructure protection, ultimately reinforcing national cybersecurity resilience and economic stability.