Annotation:

This paper examines methods for attaching malicious software (malware) to various levels of security rings of modern processors based on the x86_64 architecture. The article discusses all levels of rings from 3 (user) to –3 (level of the control engine). In addition, for each level, the capabilities of malware are defined, which is attached to the corresponding ring. Correlating the capabilities and levels of rings makes it possible in the future to develop criteria according to which it will be possible to identify malicious software operating on a personal computer. As a result of the analysis, it was established that the methods of attachment for different rings differ, and malicious activity can only be detected from levels lower than the malware located, which imposes a number of requirements on a unified method for its detection.

Keywords:

cybersecurity, malware analysis, security rings, methods of attaching malware

Annotation:

This article presents a method for detecting and eliminating floating vulnerabilities in mobile applications at the final stage of development. The nature of such vulnerabilities is analyzed and existing methods of their detection and neutralization are considered. The developed method is based on analyzing the state of the application at different points in time and comparing it with the reference state. It includes fixing the initial state, discrete analysis of its changes, detection and identification of vulnerabilities, their elimination. The main area of application of the method is to ensure the security of mobile applications at late stages of development and in the process of final testing. The conclusions of the article emphasize the importance of early detection of floating vulnerabilities to ensure a high level of information security of the final (final) software product

Keywords:

floating vulnerabilities, mobile applications, program testing, state estimation, information security

Annotation:

Identification of graphical subsystems with parallel-conveyor organization of calculations as a means of detection of subscriber terminals in information-telecommunication networks

Keywords:

identification, graphical subsystem, JavaScript, web browser

Annotation:

Existing approaches to building systems for active auditing of IoT devices are investigated. A sustainable approach to auditing IoT devices using fault-tolerant distribution is proposed. A comparative analysis of algorithms for achieving consensus in distributed systems and means of implementing active auditing is carried out

Keywords:

audit, Censys, distributed computing, information security, information technology, Internet of Things, Nmap, port scanner, Raft, Shodan

Annotation:

Protection methods against TLS covert storage channels using the Random and SessionID fields of the ClientHello message are proposed. Protection means have been developed using the proposed protection methods: a module for IDS/IPS Suricata that filters TLS packets depending on the SessionID contents, and a proxy server that reformats packets transmitted to the communication environment. A comparative analysis of the implemented protection means was carried out from the point of view of their impact on the communication channel bandwidth and their effectiveness in the secret information transfer countering. The developed protection means are applicable for integration into existing protection systems against network covert channels. Recommendations on the use of proposed protection means depending on the desired level of security are given

Keywords:

secret information, ClientHello message, Random, SessionID field, proxy server, filtering mean

Annotation:

The article considers the corporate portal on the Incomand platform as a single access point to the information system of Digital Technologies 1520 LLC to ensure automation and systematization of implemented business processes in order to improve work efficiency and organize convenient access for employees to all information assets, including confidential information. To increase the level of security of information processed and stored in the organization, a software tool for managing the role model of access control for employees of the organization has been developed and implemented, which significantly complements the standard security model of the corporate portal

Keywords:

corporate information system, corporate portal, role model of access control, information protection

Annotation:

Two new approaches to key pre-distribution based on an ideal additive homomorphic secret sharing scheme were proposed in [1]. However, it was not possible to prove their security against insider attacks in the general case. In this paper, a simple method for distributing shares based on Shamir’s secret sharing scheme corresponding to the first approach in [1] is proposed and analyzed. Namely, the following problem is solved: it is necessary to distribute 2n shares among n participants in such a way that each participant keeps two shares, and any pair of participants corresponds to a (3,4)-threshold scheme, where the common threshold can be arbitrary. Note that such a problem is solved for the first time in the theory of secret sharing. Unfortunately, the analysis showed that the key agreement protocol based on the proposed technique of shares pre-distribution is not resistant to insider attacks. A general necessary condition for the security of the key agreement protocol in the inside adversary model is obtained

Keywords:

key pre-distribution, Shamir’s secret sharing scheme, key agreement protocol, adversary model, lightweight cryptography

Annotation:

Automation of the approximate method for estimating active power flows in an electric network with three buses according to specified parameters in nodes using an incomplete conductivity matrix and the implementation of calculations in the CVX format. is considered. The method is based on the fact that the active resistances of the power transmission lines in the electrical circuit are significantly less than the reactive ones, which makes it possible to obtain a simple relationship between the power in the nodes and the angles, which establishes the connection of the parameters of the nodes using a non-invertible conductivity matrix. CVX is a calculation format that allows you to introduce various constraints, including current density in lines, parametric changes, external perturbations, etc. The results of estimates of active power flows for possible variants of the node “zeroing” scheme by minimizing the Euclidean norm are presented. The practical application of the proposed method is determined by the need to quickly assess the volume of purchases in the electricity markets

Keywords:

power grid, power flows, approximate estimation method, conductivity matrix, incomplete matrix rank, CVX technologies, Euclidean norm, computational structure

Annotation:

The paper reviews the problem of ensuring the security of a global model in the federated learning systems. The proposed protection method, based on data verification using a trusted group of nodes, ensures that only correct updates are considered during the aggregation of the global model. As a result of experimental study, it is demonstrated that the developed method ensures high speed of identification and isolation of adversarial clients implementing label substitution and noise imposition

Keywords:

artificial intelligence security, model security, noise imposition, trust model, label substitution, federated learning

Annotation:

To formulate optimization tasks in the Electronic Policy Document Management System, an enterprise can be presented as a set of departments performing certain functions. At large enterprises there is a constant exchange between the individual departments of the enterprise, between the document databases of departments. The paper examines solutions to several document database- related problems. Here, first of all, we consider the problem of choosing a model capable of setting the relationship between the query execution time and the amounts of documents, grouping of policy documents according to their sources of creation and evaluation of the advantages that this grouping can offer. An experimental table showing the relationship between data size and query execution time is given to solve the problems set. The least squares method is used to select linear or hyperbolic models used in this table. The closeness of the model of this relationship to a linear dependence is used in evaluating the advantages of partitioning the database into natural groups. It is known that policy document databases store documents of local or international importance that are created and recommended for implementation by local or international organizations. To improve the work, the documents in the database can be grouped by the degree of their importance, by the date of entry into the system, by the organizations that created the document. The paper presents a method of grouping policy documents by the source of their creation. Some numerical characteristics indicating the advantages of this grouping are given

Keywords:

policy document database, data source, query time, amount of information, additional delays, mean-square difference, linear model, hyperbolic model, natural division

Annotation:

Information is becoming an increasingly valuable asset for companies, so information security management is an integral part of the work of all institutions and enterprises. The professional experience and skills of information security specialists significantly affect the development of the system, audit and management of the information security system. In light of the high rate of receipt of relevant information and rapid changes in the information security system, it is important that future specialists in this field have the ability to analyze information, use it effectively and make accurate forecasts based on this data. The development of reflexive and predictive competencies in practice is possible through the development of the ability to anticipate, which is the mental mechanism underlying forecasting and goal setting. The role of anticipation as a component of reflexive and predictive competencies is considered, as well as methods of its development among information security specialists.

Keywords:

information security, cybersecurity, anticipation, reflexive-prognostic competencies, mental regulation, vulnerability

Pages 168–174

Annotation:

The paper describes a business-logic and results of the stegoanalysis software, a stegoanalytical module based on the algorithms developed by the author for image steganalysis, which enables to detect embeddings even with low stego-payload (10–25 % of the total). The solution is aimed at improving the enterprise information security by detecting media files (images) containing embeddings and preventing unauthorized transfer of such files or viewing and extracting the received hidden message as well as preventing the installation of malware, the module of which is embedded in the image with the steganography. The software package works with embeddings by the Koch – Zhao method and LSB-replacement methods.

Keywords:

steganalysis, steganographic analysis, stegocontainer analysis, LSB-insert detection, DCT-insert detection, Koch – Zhao method

Pages 9–17

Annotation:

The article is devoted to the development of tools for evaluating intelligent information security management systems in enterprises. The proposed methodology is based on a combination of entropy approaches to assessing the quality of information and a priori assessment of competence in terms of balancing the efficiency and validity of decisions made. The proposed mathematical model can be used for a priori evaluation of information security decision support systems.

Keywords:

competence, validity, intelligent system, communication, an aggregated model

Pages 18–27

Annotation:

This paper presents a mathematical graph-based model for use in automated security analysis systems. The model allows to link information about the system obtained by a specialist in the process of security analysis with a set of attack scenarios in which it may be involved. Executing each scenario results in new portion of data, that describes some system component and contributes to the expansion of the attack graph.

Keywords:

attack graph, graph-based model, security analysis, attack scenarios, heterogenic systems, security assessment, penetration testing

Pages 28–35

Annotation:

Security criteria for self-organizing cyber-physical systems are proposed, taking into account their specificity, which consists in the need to ensure correct functioning, even under conditions of destructive information impacts, and information security. The solution of the problem is complicated by the presence of both local goals of the system components capable of self-organization and the global goal of the entire system. The paper systematizes security threats for self-organizing cyber-physical systems taking into account their specifics. We propose three security criteria – graph and two entropy criteria, the combined use of which will allow us to detect attacking influences aimed at both disabling the system and obtaining the possibility of stealthy control of the system in accordance with the attacker's goals.

Keywords:

cybersecurity, self-organizing systems, multi-agent system, intelligence, entropy, target function

Pages 36–49

Annotation:

The article analyzes the problems of using of mobile devices when applying of the BYOD concept. An adapted methodology for assessing information security threats is proposed. In addition to the traditional approach of building a security system in the information system, a software tool for monitoring unauthorized access has been developed and tested.

Keywords:

BYOD, mobile devices, corporate information system, information security, unauthorized access

Pages 50–61

Annotation:

The article proposes a way to assess the effectiveness of selecting and distributing the goals of a group of unmanned aerial vehicles when they perform aerial photography tasks. Analytical expressions are obtained for resource intensity, performance and efficiency of task execution. Modeling and comparative assessment of the efficiency indicator for various options for the formation and target setting of a group of unmanned aerial vehicles was carried out.

Keywords:

group of unmanned aerial vehicles, flight task, efficiency, comparative assessment, aerial photography

Pages 62–69

Annotation:

Approaches to self-regulation of networks with adaptive network topology based on graph theory are presented. These approaches are limited to networks whose nodes do not change their position in space, such as peer-to-peer and heterogeneous sensor networks, as well as industrial networks using the example of Smart Grid smart energy consumption networks. A generalized objective function is described for each type of network, conditions for self-regulation are formulated, and the process of self-regulation is formally described.

Keywords:

information security, self-regulation, graph theory, objective function, network with adaptive topology

Pages 70–79

Annotation:

This work contains a description of the stage of practical management of information security risks of a web resource as a result of its use as a medium and communication channel for steganographic information exchange. The possibility of using steganography on public Internet resources as a tool for attackers to exchange illegal data and carry out computer attacks has been established based on available research results. As a result, the relevance of developing methods to counter the malicious use of steganographic algorithms has been proven. The paper examines threats to information security when using steganography methods in accordance with the FSTEC IS BDU. Based on these threats, the 4-level model of threats to a web resource from user data has been developed. It including the risks of violating the integrity, accessibility, confidentiality and provisions of 374-FL (amendments to 149-FL “On information, information technologies and information protection"). The 374-FL demonstrated the problem of the inaccessibility of data to check for malicious nature when it is exchanged covertly. Based on the developed model, a practical assessment of the risks of a web resource was carried out using the Microsoft Security Assessment Tool (MSAT), as well as their theoretical assessment matrices FRAP, CRAMM in order to demonstrate the features of using a specific approach in solving the problem of countering a new type of attack. As a result, the necessary measures and components of mitigation were calculated using mathematical programming methods in order to identify the minimum and most optimal quantitative composition of the components of protection against the malicious use of steganography. These measures and components consist of specialists, their competencies, as well as software tools necessary for high-quality protection of a web resource within the framework of the scientific problem under study: the use by an offender of information security technologies when carrying out illegal activities and the further development of counteraction and analysis tools coming to the web resource data.

Keywords:

steganography, steganographic attacks, hidden data exchange, information security risk management, Internet, information security threats, FRAP, CRAMM, OCTAVE

Pages 80–95

Annotation:

The article considers the possibility of using EPC notations to build scenarios of information security (InfoSec) threats in the automated process control system (ICS). In accordance with regulatory and legal documents, if there is a scenario of an InfoSec threat, it is recognized as relevant to the information system and is included in the InfoSec threat model to justify the choice of measures and means of information protection. The methodology of building scenarios of threat realization in the form of EPC models is proposed. The construction of EPC models of attack scenarios on industrial network infrastructure components is based on the establishment of possible objects of impact taking into account the architecture of the ICS, identification of possible vulnerabilities of infrastructure components and means of protection on the way to the threat’s implementation, determination of possible tactics and techniques, threats, lists of which are presented in methodological documents. The results of the development of several scenario models of computer attacks on the enterprise infrastructure, including an attack over wireless channel of communication with the field level are presented.

Keywords:

industrial control system ICS, EPC threat, scenario diagram, target of the threat, information security, tactics, techniques, information security threats

Pages 96–109

Annotation:

There are presented development results of info-telecommunication instrumentarium for natural risk management while commercial use of autonomous vessels in the Arctic and Subarctic, including Northern Sea Route and higher latitudes. Toolkit was developed using Foresight technologies, the methods of database designing within online technologies. Research results have a high scientific novelty and can be used by various players, including educational organizations while formation of Master's programs. Online platform Researchgate was used for preliminary discussion and data exchange while research.

Keywords:

infocommunication systems, natural risk management, autonomous vessels, Arctic

Pages 110–120

Annotation:

The article presents the results of the binary code analysis of the embedded software for hardware platforms based on processors with ARM architecture (trustlets) for the presence of potential hidden channels expressed in the form of potentially dangerous functional objects. The descriptive model of the trustlet has been developed based on the binary trustlet code analysis. The model allows to identify quantitative and qualitative indicators describing the presence of potentially dangerous functional objects in the trustlet code. These indicators allows to rank the trustlets according to the vulnerabilities criticality levels. It is advisable to use the ranking results for searching hidden channels in the embedded software carried out during certification tests of information security tools.

Keywords:

trustlet, potentially dangerous functional object, vulnerabilities, ARM

Pages 121–133

Annotation:

This article highlights the most essential properties of software for searching for errors in it by the method of spot-based fuzzing. A generalized set-theoretic model of software is formulated, its invariant form is presented and its adequacy, universality and consistency are proved.

Keywords:

information security, software, error detection, mathematical modelling, symbolic execution, fuzzing

Pages 134–141

Annotation:

The paper reviews the problem of protecting machine learning models from the security threat of violating data confidentiality, which implements membership inference in the training datasets. A method for protective noising of the training dataset is proposed. It has been experimentally shown that Gaussian noising of training dataset with scale of 0.2 is the simplest and most effective approach to protect machine learning models from the training data extraction. Compared to alternative techniques, the proposed method is easy to implement, universal for different types of target models, and allows reducing the effectiveness of attack by up to 26 % points.

Keywords:

noising, machine learning, training set, membership inference, Gaussian noise

Pages 142–152

Annotation:

The paper proposes machine-learning pipelines that allow to automatically generating relevant feature spaces for virus detectors, detect the presence of viral modifications in JS-files and scripts in real time, as well as interpret and visualize the machine solution obtained automatically. It is shown that the best quality metrics will be demonstrated by models of an abstract syntactic tree using binary classifiers based on ensembles of decision tree. The explanation, the solution automatically generated by the virus detector, is demonstrated.

Keywords:

virus analysis, machine-learning models, features viral modification, decision trees ensembles, machine solution interpretation

Pages 153–167

Annotation:

This paper analyzes the security of the common distributed consensus algorithms used in smart city distributed ledgers. There is proposed a concept of smart city distributed ledgers protection, which applies a hybrid distributed consensus protocol based on the joint use of the tangle class algorithm and the proof-of-authority class algorithm, protected by trusted computing and remote attestation technologies. The proposed protocol compensates for the weaknesses and vulnerabilities of the conventional distributed consensus algorithms that are inherent in distributed ledger technology and hinder its widespread use in large-scale smart city systems

Keywords:

smart city, distributed ledger technology, security, distributed consensus algorithm

Pages 10-16

Annotation:

This article presents a formal formulation of the problem of modifying executable code during execution based on morphing used in computer animation. In the course of the research, the need for developing a morphing method for software was substantiated, and the basic principles used in computer animation were adapted for the field of cybersecurity, and vectors for further research in this direction were determined. The results obtained during the adaptation should be used in the design and implementation of the morphing method for executable code

Keywords:

cybersecurity, executable file protection, binary morphing, protection against ROP chains

Pages 17-23

Annotation:

This paper is devoted to an approach to countering network attacks based on network reconfiguration to exclude the possibility of successful completion of the attack. To implement the approach, it is proposed to use the mechanism of recommender systems that provides both generation of possible network topologies and their ranking. The proposed intelligent recommender system is based on a reinforcement learning algorithm based on the actor – critic model. Experimental studies have confirmed the effectiveness of the developed system

Keywords:

reinforcement learning, DDoS, network attack, recommender system

Pages 24-30

Annotation:

The paper analyzes the syntactic and semantic characteristics used to identify the similarity of binary code fragments, presents the results of analysis on the effectiveness of decompilation techniques and methods for syntactic similarity detection in the context of code clone detection task. Method for searching the code clones is proposed, which includes analyzing both semantic and syntactic features of the binary code snippets. The results of a comparative analysis of the effectiveness of the proposed method are presented

Keywords:

syntactic similarity, semantic similarity, pseudocode, binary code search, code reusage

Pages 31-45

Annotation:

The current trend of increasing labor productivity and efficien-cy of business processes entails optimization of software development pro-cesses through the use of generative artificial intelligence models trained on various code bases and manual copying of code fragments. Taking into ac-count the growing number of reported vulnerabilities, methods for detecting clones of program code are needed. In this paper, we propose a method for evaluating the similarity of fragments of the program code of binary executable files, which is based on the representation of the code in the form of an FA-AAST tree and the apparatus of graph neural networks. The results obtained during testing on open and closed source software demonstrate the correctness of the proposed method and higher accuracy in comparison with considered solutions

Keywords:

code clone, AST, FA-AAST, graph neural network, cyberse-curity

Pages 46-55

Annotation:

The main mathematical mechanism chosen by NIST (National Institute of Standards and Technology) for standardization is the lattice, while the hash function mechanism is an alternative. Unlike isogenies of elliptic curves, these mechanisms use a larger size of both public keys and signatures. Using the example of aggregate signature protocol based on isogenies of elliptic curves, we will show how the masking method can be used to prevent the main attack on this mechanism, while obtaining a smaller signature size. Post-quantum cryptography, aggregate signature, isogenies

Keywords:

post-quantum cryptography, multiple signature, isogeny

Pages 56-64

Annotation:

The paper presents a survey of existing software security analysis method and their ability to detect vulnerabilities caused by errors in several software components implemented in different programming languages. A set of three generalized code graph representations is proposed for implementation of software security analysis methods with consideration for interaction between components written in different programming languages. A software security analysis system architecture and a prototype of a system that uses proposed generalized code graph representation was developed. The prototype supports analysis of software components written in PHP, C and .NET based programming languages

Keywords:

software vulnerabilities detection, logical vulnerabilities, static code analysis, graph theory, multicomponent software analysis

Pages 65-75

Annotation:

The paper is devoted to the implementation of intelligent synthesis of cyber-resistant structures. We propose methods that implement the synthesis both at the stage of building a network structure and at the stage of its recovery when an attack or failure occurs. Experimental results confirming the effectiveness of the proposed methods are presented. The architecture of the system for recognizing cyber threats and intelligent synthesis of cyber-resilient network structures is described.

Keywords:

functional isomorphism, target function, synthesis, critical nodes

Pages 76-91

Annotation:

The concept of cyber resilience of complex systems is largely determined by the ability of their network structures to be rebuilt in such a way as to neutralize the impact of an attack already implemented on the system or to make its successful implementation impossible when detected at an early stage. It is proposed to solve the problem of synthesis to ensure cyber resilience of network structures both at the stage of system design (synthesis "from scratch") and at the stage of their operation (synthesis-restructuring). The paper presents modeling of the impact of massive and targeted attacks on the system, considers the constraints on synthesis, and formulates synthesis criteria in terms of graph theory. The obtained theoretical results are the basis for practical construction of cyber-resistant network structures and their rebuilding under attack

Keywords:

cyber resilience, target function, synthesis, graph stability, graph integrity

Pages 92-103

Annotation:

The paper presents a review of software tools for information securi-ty that use hardware virtualization technology on the ARM architecture. For each tool considered, a brief description is provided, along with its advantages and disadvantages. The results of a comparative analysis of the reviewed tools are presented, highlighting the research directions in the field that require the most attention

Keywords:

information security, software, virtualization, hypervisor, ARM

Pages 104-117

Annotation:

The features of ad-hoc network scanning have been studied and methods for its detection have been analyzed. A modification of the hybrid method for detecting scanning from the Internet has been proposed, along with methods for identifying decoy scanning and creating blacklists of subnets to prevent further scanning. The proposed protection methods have been compared with existing counterparts

Keywords:

information security, ad-hoc networks, network scanning

Pages 118-128

Annotation:

This article proposes a classification of attributes of cybersecurity threats. A statistical study of the descriptive power of an open and closed threat dataset is presented. An expert study of an advanced persistent threat was also conducted using open reports as an example. The completeness of the threat description, as well as the ability of modern tools and protocols to describe such a threat, are assessed. The main conclusion is that current approaches to describing cybersecurity threats have shortcomings that prevent the most effective use of such information in operational activities

Keywords:

cybersecurity threats, "pyramid of pain", tactics, techniques and procedures, threat description protocols

Pages 129-145

Annotation:

Ensuring consistent access control is one of the key security challenges in heterogeneous Big Data systems. The problem is presented by the large number of data processing tools, information sources and users; heterogeneity of security models; complexity of granular access rules. Analyzing the time factor in this case will improve the consistency and reliability of access differentiation. The aim of the work is to select a methodology and tools for the implementation of temporal logic in the verification processes of access control of Big Data systems. The paper analyzes types of temporal logic and verification methods based on TLA (temporal logic of actions). We propose the use of TAL+ to solve this problem and give an example of the corresponding specification

Keywords:

information security, Big Data, heterogeneous data processing systems, access control, verification, temporal logic, TLA+

Pages 146-156

Annotation:

The paper proposes a methodology of searching for errors and undeclared capabilities in software, which is based on: a graph model of software operation, a method of estimating the achievability of basic software blocks, a mechanism of general simulations and a method of point fuzzing which is using this mechanism

Keywords:

information security, software, error detection, methodology, symbolic execution, fuzzing

Pages 157-164

Annotation:

The paper proposes a method of CAPTCHA generation using adversarial attacks with respect to the image recognition model. The advantages of this method are determined based on comparative analysis of statistical data obtained as a result of the study. The developed method allows increasing the efficiency of counteraction against automatic bypassing of CAPTCHA services due to the use of insecurity of neural network models from malicious influence

Keywords:

adversarial attacks, text recognition, denial of service, CAPTCHA services, machine learning, Python

Pages 165-175

Annotation:

The paper examines the performance indicators of automatic machine learning platforms when they function in standard and confidential modes using the example of a nonlinear multidimensional regression. A general protocol of distributed machine learning trusted in the sense of security is proposed. It is shown that within the framework of confidential virtualization, when optimizing the architecture of machine learning pipelines and hyperparameters, the best quality indicators of generated pipelines for multidimensional regressors and speed characteristics are demonstrated by solutions based on Auto Sklearn compared with Azure AutoML, which is explained by different learning strategies. The results of the experiments are presented

Keywords:

automatic machine learning, confidential computing, confidential virtual machines, optimization of the architecture of the machine-learning model, hyperparameters

Pages 109–126

Annotation:

The most vulnerable nodes of any information system are those that depend on the human factor. Such nodes, for example, include user electronic computers (PCs), which are susceptible to attacks using malicious software (malware). Modern malware detection tools can effectively identify known instances, but their effectiveness for zero-day threats is at a suboptimal level. One of the potential ways to identify malware is a method based on behavioral analysis and analysis of their activity on a personal computer, but its creation requires systematization of known information about the activity of various types of malwares. This scientific work systematizes malicious software to determine the types of activity they exhibit to use the resulting system to create a method for identifying malware based on behavioral analysis

Keywords:

information security, malicious software, systematization, malware activity

Pages 142–154

Annotation:

This article describes an approach to creating target characters based on LLM agents. Agents use personal memory to access biographical and personal data assigned to them. In order to increase the integrity of the characters being created, a short life biography is generated based on the initial target data, corresponding to the original set and enriching the reactions of the agents. The personal traits inherited by agents are formulated on the basis of descriptive information of MBTI types, and the paper presents a study of the correspondence of characters to their target personality type

Keywords:

LLM, social simulation, personalization, social modeling, cyberpsychology

Pages 127–141

Annotation:

This paper presents the main probability-theoretic models describing a wide class of physical random number generators and allowing us to propose general approaches to their synthesis and analysis

Keywords:

physical random number generator, stochastic process, scheme of instantaneous value, scheme of intervals, scheme of excursion, optimal interpolation problem

Pages 9–19

Annotation:

The article proposes a new approach to the application of the well-known method of indicator functions, which used to simulate the detection and neutralization of suspicious information objects in the information environment of an industrial enterprise, as well as to simulate a security system during operation. Formula dependencies are given for calculation of stochastic indicators, allowing some objective estimates of values of time parameters and their impact on safe functioning of information systems

Keywords:

indicator function, information security, information system, neutralization, identification of the object

Pages 20–29

Annotation:

Mathematical models of information system defense against information security threats are proposed based on the classical model of the struggle between two adversaries – the Lanchester model. Using the method of constructing systems of differential equations with a given set of invariants – first integrals, a deterministic model with invariant control and a stochastic model with Viner perturbations and a model with software control with probability 1 have been constructed. The behavior of the systems has been evaluated by means of mathematical modeling in MathCad. Behavior of the constructed models depending on initial conditions is considered. The existence of the stochastic model of information system protection against information security threats protected with probability 1 is established

Keywords:

mathematical model, Lanchester model, information security, deterministic model of information protection, stochastic model of information protection, invariant control, program control with probability 1

Pages 30–39

Annotation:

The article deals with the task of the security assessing of big data systems. The authors define the main features of big data systems as an object of security assessment and analyze the known methods of assessment, including methodologies for assessing the security of information systems. Based on the results obtained, a new method of assessment is proposed, taking into account such factors as the state of the access control system in the considered heterogeneous systems and the number of privileged users. A mathematical formalization of the assessment is proposed, the main stages of its implementation are described, and a test case is presented

Keywords:

information security, Big Data, heterogeneous data processing systems, security assessment

Pages 40–57

Annotation:

The current task of obtaining evidentiary information as a direction for the development of digital forensics is considered. The procedure for collecting evidentiary information from computer storage devices is given, including the basic requirements for collecting evidence, its safety and ensuring integrity. An overview of methods for obtaining evidentiary information from a computer is given, among which an accessible and effective method is highlighted using Open Source software to form a snapshot of RAM. The results of an experiment to study the possibility of obtaining and analyzing a snapshot of a computer’s RAM using Open Source tools are presented and approximate information is determined that can be obtained when using them in the interests of computer technical expertise

Keywords:

digital forensics, evidentiary information obtained from a computer, the procedure for collecting evidentiary information, methods for obtaining evidentiary information, an experiment on obtaining evidentiary information from a computer

Pages 58–68

Annotation:

The article discusses the application of the distributed ledger technology to secure information systems of the smart city. The authors identified the limitations of existing solutions in this area and considered the main directions for the development of distributed ledger technology, ensuring successful integration into the smart city ecosystem

Keywords:

smart city, internet of things, distributed ledger technology, information security

Pages 69–79

Annotation:

In the interests of sound planning for the modernization of information security systems, approaches to constructing methods for assessing the possibility of developing and introducing within the planned time frame innovations necessary for the timely detection, prevention and elimination of the consequences of information security threats are considered. As an indicator for assessing this possibility, it is proposed to use the probability of modernizing the information security system over a certain specified period of time. To quantify this indicator, approaches based on a generalization of Chebyshev’s inequality and the principle of stochastic dominance are proposed

Keywords:

information security system, modernization planning, assessing the likelihood of meeting the deadlines for introducing innovations

Pages 80–87

Annotation:

The paper evaluates the effectiveness of a group of unmanned aerial vehicles in performing aerial photography tasks in solving heterogeneous tasks and various payload variants. The modeling of options for equipping the elements of the group when performing various tasks is carried out. The integral indicator is defined as a combination of particular performance indicators, efficiency and resource intensity. The relationship between task options and payload options has been established. Numerical modeling of combinations of group equipment options and task options is carried out

Keywords:

efficiency, resource intensity, integral indicator, group of unmanned aerial vehicles, flight task, efficiency, comparative assessment, aerial photography

Pages 88–93

Annotation:

An approach to investigating the states of complex industrial networks with adaptive topology using network motifs – statistically significant subgraphs of a larger graph – is proposed. The analysis presented addresses the ability of network motifs to characterize system performance and the possibility of their application to short-, medium-, and long-term prediction of system states. Using the Smart Grid network structure as an example, a directed graph is modeled, in which the most common motifs are searched, several attack scenarios on network nodes are simulated and a network state prediction is built. The results of experimental studies confirmed the correctness and validity of the application of this mathematical apparatus for the set tasks

Keywords:

dynamic graph, network motive, target function, network with adaptive topology, forecasting

Pages 94–108