Дисертації з теми "Power System Cyber Security"
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Sridharan, Venkatraman. "Cyber security in power systems." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43692.
Повний текст джерелаGiannini, Martina. "Improving Cyber-Security of Power System State Estimators." Thesis, KTH, Reglerteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-142843.
Повний текст джерелаYoussef, Tarek. "Co-design of Security Aware Power System Distribution Architecture as Cyber Physical System." FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3210.
Повний текст джерелаWang, Zhuoyang. "Application of Complex Network Theory in Power System Security Assessment." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/17367.
Повний текст джерелаVuković, Ognjen, and György Dán. "On the Security of Distributed Power System State Estimation under Targeted Attacks." KTH, Kommunikationsnät, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122442.
Повний текст джерелаQC 20130522
Vuković, Ognjen. "Data Integrity and Availability in Power System Communication Infrastructures." Licentiate thesis, KTH, Kommunikationsnät, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122447.
Повний текст джерелаQC 20130522
El, Hariri Mohamad. "Secure Control and Operation of Energy Cyber-Physical Systems Through Intelligent Agents." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3854.
Повний текст джерелаWei, Longfei. "Game-Theoretic and Machine-Learning Techniques for Cyber-Physical Security and Resilience in Smart Grid." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3850.
Повний текст джерелаKlas, Juliana. "Advanced applications for state estimators in smart grids : identification, detection and correction of simultaneous measurement, parameter and topology cyber-attacks." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/185233.
Повний текст джерелаO aumento da demanda e a preocupação com as mudanças climáticas são importantes motivadores para as fontes de energia renováveis e a modernização da rede elétrica. A modernização da rede elétrica inteligentes (REI) ou smart grid, não somente possibilita as fontes de energia renováveis mas também abre portas à novas aplicações de grande impacto como a prevenção e restauração automática de falhas e a possibilidade dos consumidores terem grande controle sobre o consumo de eletricidade e atuação participativa no mercado de energia. De acordo com o Instituto Norte Americano de Pesquisas do Setor Elétrico, um dos principais desafios a ser enfrentado no desenvolvimento das REIs é relacionado a segurança cibernética dos sistemas. O cenário da segurança cibernética atual é caracterizado pela rápida evolução dos riscos e vulnerabilidades que impõe desafios para a confiabilidade, segurança e resiliência do setor elétrico. Neste contexto, estimadores de estado do sistema de potência são ferramentas críticas para a confiabilidade da rede, sob um cenário de observabilidade do sistema eles possibilitam o fluxo de potência do sistema e a análise de dados incorretos. Neste trabalho, ataques cibernéticos são modelados como injeção de dados incorretos em medidas, parâmetros e topologia do sistema. A metodologia proposta possibilita detecção de ataques mesmo se eles pertencerem ao subespaço ortogonal formado pelas colunas da matriz Jacobiana e em áreas do sistema com reduzida redundância de medidas. A solução proposta pelo estado da arte considera correções em parâmetros ou topologia quando medidas estão livres de erros. Porém, como pode-se corrigir medidas se parâmetros ou a topologia estão simultaneamente com erros? Para resolver este problema um modelo relaxado é proposto e resolvido iterativamente. Assim que detectado e identificado, ataques cibernéticos em parâmetros, topologia e/ou medidas são corrigidos. As contribuições específicas do trabalho são: cálculo do desvio padrão para pseudomedidas (iguais à zero) e medidas de baixa magnitude baseado em medidas correlatas e propriedades da covariância; modelo baseado em relaxação lagrangiana e erro composto de medida para identificação e detecção de ataques cibernéticos; estratégia hibrida de relaxamento iterativo (EHRI) para correção de ataque cibernético em parâmetros da rede de modo contínuo e com reduzido esforço computacional e metodologia baseada em ciclo holístico de resiliência para estimadores de estado sob ataques cibernéticos simultâneos em parâmetros, topologia e medidas. A validação é feita através dos sistemas de teste do IEEE de 14 e 57 barras, testes comparativos elucidam as contribuições da metodologia proposta ao estado da arte nesta área de pesquisa. Trazendo as capacidades de mitigação, resposta e recuperação ao estimador de estado com esforço computacional reduzido, o modelo e metodologia propostos tem grande potencial de ser integrado em SCADAs para aplicação em casos reais.
Akbar, Yousef M. A. H. "Intrusion Detection of Flooding DoS Attacks on Emulated Smart Meters." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/98554.
Повний текст джерелаM.S.
The power grid is becoming more digitized and is utilizing information and communication technologies more, hence the smart grid. New systems are developed and utilized in the modernized power grid that directly relies on new communication networks. The power grid is becoming more efficient and more effective due to these developments, however, there are some considerations to be made as for the security of the power grid. An important expectation of the power grid is the reliability of power delivery to its customers. New information and communication technology integration brings rise to new cyber vulnerabilities that can inhibit the functionality of the power grid. A coordinated cyber-attack was conducted against the Ukrainian power grid in 2015 that targeted the cyber vulnerabilities of the system. The attackers made sure that the grid operators were unable to observe their system being attacked via Denial of Service attacks. Smart meters are the digitized equivalent of a traditional energy meter, it wirelessly communicates with the grid operators. An increase in deployment of these smart meters makes it such that we are more dependent on them and hence creating a new vulnerability for an attack. The smart meter integration into the power grid needs to be studied and carefully considered for the prevention of attacks. A testbed is created using devices that emulate the smart meters and a network is established between the devices. The network was attacked with a Denial of Service attack to validate the testbed performance, and an Intrusion detection method was developed and applied onto the testbed to prove that the testbed created can be used to study and develop methods to cover the vulnerabilities present.
Silva, Lázaro Eduardo da. "Sistema embarcado inteligente para detecção de intrusão em subestações de energia elétrica utilizando o Protocolo OpenFlow." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-11112016-085936/.
Повний текст джерелаThe IEC-61850 made it possible to integrate equipments of electric power system substations to a high-speed Ethernet data communication network. Its main goal is the interconnection of IEDs for the automation of processes in an electrical system. The contributions of this protocol for the integration of the control and supervision of the electrical system are diverse, although an Ethernet network exposes the electrical system for cyber attacks. The IEC-62351 states a series of recommendations to provide security to the communication network of the electrical system, such as the communication network management, the analysis of GOOSE messages and the use of intrusion detection systems. This study describes the development of an IDS that meets the security requirements proposed by the IEC-62351 standard to identify attacks on communication between GOOSE messages exchanged by electrical equipment using IEC-61850. For the development of this application, fields of the GOOSE messages were identified, in order to recognize the expected values in different power system operating conditions. Behaviour patterns were determined to detect false messages on the communication network. A real-time embedded operating system on ZYBO was installed and configured, as well as the OpenMul controller to manage the communication network of the substation through the OpenFlow protocol, performing optimizations for multicast traffic. A detection system and block tamper GOOSE messages, using the OpenFlow protocol for control of the electrical system communication network, were developed. In addition, an intelligent system using an Artificial Neural Network (ANN) Nonlinear Autoregressive Model with Exogenous Input (NARX) for predicting of the GOOSE messages traffic and the detection of Distributed Deny of Service attack (DDOS) were also developed. The results obtained show that the OpenFlow protocol may be a valuable tool for network control, however, manufacturers should maturely carry on with its implementation in the switches, so that it be used in substation communication networks. The traffic prediction system of the GOOSE messages presented interesting benefits for the security of the communication network, demonstrating potential to built a DDOS attack detection system performed by GOOSE messages on the communication network of electric power substations.
Tang, Han. "Security analysis of a cyber-physical system." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/Tang_09007dcc803cfb5c.pdf.
Повний текст джерелаVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 30, 2007) Includes bibliographical references (p. 55-57).
Lewis, Paul Simon. "The global vulnerability discovery and disclosure system : a thematic system dynamics approach." Thesis, Cranfield University, 2017. http://dspace.lib.cranfield.ac.uk/handle/1826/12665.
Повний текст джерелаStomeo, Carlo. "Applying Machine Learning to Cyber Security." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17303/.
Повний текст джерелаChivukula, Venkata Ramakrishna. "Detecting Cyber Security Anti-Patterns in System Architecture Models." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-293027.
Повний текст джерелаOrganisationer över hela världen har blivit måltavlor för storskaliga cyberattacker. Över tid har antalet framgångsrika attacker vuxit till en hög nivå. Som en förberedelse för dessa attacker måste organisationer testa sin infrastrukturs motståndskraft. Ett sätt att hantera risken för dessa attacker och säkerställa säkerhet är användningen av hotmodellering och attacksimuleringar. Genom hotmodellering och attacksimuleringar kan organisationer analysera egenskaperna för informationssäkerhet i sin infrastruktur och identifiera svaga punkter. Svagheterna måste sedan hanteras för att förbättra organisationens övergripande säkerhetsposition. När de modelleras kan dessa svagheter förekomma i olika former. Vissa är komponentspecifika och lokala till ett objekt i infrastrukturen. Dessa kan hanteras med hjälp av försvar som definieras i securi- CAD. Andra svagheter kan uppstå genom relationerna mellan flera objekt i infrastrukturen. Dessa kallas strukturella svagheter. Att identifiera och mildra dessa strukturella svagheter är mycket viktigt. I denna avhandling beskrivs strukturella svagheter och en katalog med svagheter har byggts upp. Vidare definieras en modell som möjliggör beskrivning av dessa svagheter och möjliggör identifiering av svagheter i securiCADmodeller. Med hjälp av beskrivningsmodellen kan alla förekomster av bristen hittas. Dessa händelser kan sedan ersättas med strukturella förbättringar. De förbättrade securiCAD-modellerna analyseras sedan. Resultaten visar att de strukturella förbättringarna är användbara för att avsevärt minska Time-To- Compromise (TTC) för viktiga tillgångar. Med hjälp av katalogen och modellen kan systemadministratörer identifiera svagheter och testa effekten av olika förbättringar i securiCAD-modellen som sedan kan tillämpas på den faktiska infrastrukturen.
Andersson, Dorothea. "Simulation of industrial control system field devices for cyber security." Thesis, KTH, Elkraftteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202405.
Повний текст джерелаIndustriella informations- och styrsystem utgör en viktig delav vårt moderna samhälle, inte minst när det gäller kontroll och skydd avkritisk infrastruktur som elnät och vattenförsörjning. Det finns stora behov avatt säkerhetstesta dessa typer av system, vilket ofta är omöjligt iproduktionsmiljöer med realtidskrav som är erkänt känsliga för störningar, tilloch med från vanligt förekommande analysverktyg. Denna rapport presenterarhur vanliga komponenter i industriella informations- och styrsystem kansimuleras för att lura potentiella antagonister, och hur de kan användas ivirtualiserade styrsystem för cybersäkerhetsforskning. 8 olika komponentersimulerades med hjälp av Honeyd, och en generellt applicerbarsimuleringsmetodik utvecklades. Hur dessa simuleringar kan vidareutvecklasför att fungera som riktiga styrsystemskomponenter i virtualiserade miljöer harockså undersökts.
Qin, Zhengrui. "Security Supports for Cyber-Physical System and its Communication Networks." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1477067975.
Повний текст джерелаGilligan, Brian Kenneth. "Electric ship digital twin : framework for cyber-physical system security." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122264.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 90-95).
This thesis presents a dynamic model that can be used for a digital twin of an electric ship. The model is an end-to-end simulation of a ship from prime mover to maneuvering, seakeeping, and propeller ventilation in random waves representing the behavior of a physical ship. There is a trend towards increasingly networked sensors and actuators to enable condition monitoring, ensure efficient operation, and allow for autonomy. However, a cyberattack on a networked control system presents not just the possibility of information theft but of physical system damage and loss of control. Thus, a detection scheme is proposed for cyber-physical systems using a joint unscented Kalman filter. It is employed to detect cyberattacks in the simulation model of an electric ship including sensor attacks and controller attacks on a gas turbine, synchronous generator, and automatic heading control. Finally, a system theoretic framework is presented for optimal sensor placement to minimize cyber vulnerability.
United States. Office of Naval Researchgrant N00014-16-1- 2956
by Brian Kenneth Gilligan.
S.M. in Naval Architecture and Marine Engineering
S.M.inNavalArchitectureandMarineEngineering Massachusetts Institute of Technology, Department of Mechanical Engineering
Jaffer, Navin. "Cyber security vulnerabilities during long term evolution power-saving discontinuous reception protocol." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/42650.
Повний текст джерелаLong Term Evolution (LTE) is a wireless access communications network that consists of base stations called eNodeBs (eNBs), which allow connectivity between the mobile device or user equipment (UE) and the core network. To save battery power, the UE can turn off its radio transceiver circuitry, based on various parameters exchanged during the attach procedure with its serving eNB, using a protocol called discontinuous reception (DRX). During the DRX period, the UE is still connected to the network and its receiver is turned on periodically to determine if the eNB has sent any packets to it. This thesis develops the concepts of using simulation to demonstrate if a denial of service attack during the long DRX period, as hypothesized by some researchers, can be realized. Requirements for experimentation were identified and current simulation tools were evaluated as potential candidates. The tools applied were the LTE standards, the open source ns-3 network simulator and analysis of actual LTE packet traces. Follow-on studies will be required in order to address issues due to the incompleteness of the ns-3 LTE model and the incompatibility of the file format for LTE traces with that required by the Wireshark network protocol analyzer. Essentially, neither tool contains the DRX algorithm.
Salim, Hamid M. "Cyber safety : a systems thinking and systems theory approach to managing cyber security risks." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90804.
Повний текст джерелаThesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.
93
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 148-156).
If we are to manage cyber security risks more effectively in today's complex and dynamic Web 2.0 environment, then a new way of thinking is needed to complement traditional approaches. According to Symantec's 2014 Internet Security Threat Report, in 2012 more than ten million identities that included real names, dates of birth, and social security were exposed by a single breach. In 2013 there were eight breaches that each exposed over ten million identities. These breaches were recorded despite the fact that significant resources are expended, on managing cyber security risks each year by businesses and governments. The objective of this thesis was twofold. The first objective was to understand why traditional approaches for managing cyber security risks were not yielding desired results. Second, propose a new method for managing cyber security risks more effectively. The thesis investigated widely used approaches and standards, and puts forward a method based on the premise that traditional technology centric approaches have become ineffective on their own. This lack of efficacy can be attributed primarily to the fact that, Web 2.0 is a dynamic and a complex socio-technical system that is continuously evolving. This thesis proposes a new method for managing cyber security risks based on a model for accident or incident analysis, used in Systems Safety field. The model is called System-Theoretic Accident Model and Processes (STAMP). It is rooted in Systems Thinking and Systems Theory. Based on a case study specifically written for this thesis, the largest cyber-attack reported in 2007 on a major US based retailer, is analyzed using the STAMP model. The STAMP based analysis revealed insights both at systemic and detailed level, which otherwise would not be available, if traditional approaches were used for analysis. Further, STAMP generated specific recommendations for managing cyber security risks more effectively.
by Hamid M. Salim.
S.M. in Engineering and Management
S.M.
Holm, Gustav. "Automated Model Transformation for Cyber-Physical Power System Models." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214750.
Повний текст джерелаDahlman, Elsa, and Karin Lagrelius. "A Game of Drones : Cyber Security in UAVs." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259295.
Повний текст джерелаObemannade luftburna farkoster (OLF) blir mer vanliga allteftersom deras användningsområde utökas, vilket innebär att cybersäkerhetsaspekten behöver studeras. Detta arbete är en systematisk litteraturstudie som undersöker vilka typer av cyberattacker riktade mot drönare som är vanligast och vilka risker de medför. Attackerna i rapporten är kategoriserade med hjälp av metoden STRIDE samt efter vilka mål attackerna haft och vilken utrustning som krävs. Resultatet är att Spoofing och Denial of Service-attacker är vanligast och att de medför att attackeraren kan kapa eller krascha drönaren. Ingen svåråtkomlig utrustning krävs för någon av dessa attacktyper vilket indikerar att säkerhetsläget för civila drönare behöver förbättras.
Graziano, Timothy Michael. "Establishment of a Cyber-Physical Systems (CPS) Test Bed to Explore Traffic Collision Avoidance System (TCAS) Vulnerabilities to Cyber Attacks." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104624.
Повний текст джерелаMaster of Science
Traffic Collision Avoidance Systems (TCAS), or Airborne Collision Avoidance Systems ACAS), are safety-critical systems required by the Federal Aviation Administration (FAA) in commercial aircraft. They work by sending queries to surrounding aircraft in the form of radio transmission. Aircraft in the who receive these transmissions send replies. Information in these replies allow the TCAS system to determine if a nearby aircraft may travel too close to itself. TCAS can then determine help both pilots avoid a mid-air collision. Information in the messages can be faked by a malicious actor. To explore these vulnerabilities a test bed is built with commercial grade TCAS equipment. Several types of attacks are evaluated.
Majumdar, Ankur. "Security in power system state estimation." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/33744.
Повний текст джерелаZhang, Zhonghua. "Algorithms for power system security analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0025/MQ51827.pdf.
Повний текст джерелаShafie-Pour, A. R. "Real-time power system security assessment." Thesis, Durham University, 1989. http://etheses.dur.ac.uk/9303/.
Повний текст джерелаAfzal, Muhammad. "Human and Organizational Aspects of Cyber Security : From a System Suppliers Perspective." Thesis, KTH, Industriella informations- och styrsystem, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105778.
Повний текст джерелаPokhrel, Nawa Raj. "Statistical Analysis and Modeling of Cyber Security and Health Sciences." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7703.
Повний текст джерелаIheagwara, Charles M. "The strategic implications of the current Internet design for cyber security." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67554.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 87-89).
In the last two decades, the Internet system has evolved from a collection point of a few networks to a worldwide interconnection of millions of networks and users who connect to transact virtually all kinds of business. The evolved network system is also known as Cyberspace. The use of Cyberspace is now greatly expanded to all fields of human endeavor by far exceeding the original design projection. And even though, the Internet architecture and design has been robust enough to accommodate the extended domains of uses and applications, it has also become a medium used to launch all sorts of Cyber attacks that results into several undesirable consequences to users. This thesis analyzes the current Internet system architecture and design and how their flaws are exploited to launch Cyber attacks; evaluates reports from Internet traffic monitoring activities and research reports from several organizations; provides a mapping of Cyber attacks to Internet architecture and design flaw origin; conducts Internet system stakeholder analysis; derives strategic implications of the impact of Internet system weaknesses on Cyber security; and makes recommendations on the broader issues of developing effective strategies to implement Cyber security in enterprise systems that have increasingly become complex. From a global architectural design perspective, the study conducted demonstrates that although the Internet is a robust design, the lack of any means of authentication on the system is primarily responsible for the host of Cyber security issues and thus has become the bane of the system. Following the analysis, extrapolation of facts and by inferences we conclude that the myriad of Cyber security problems will remain and continue on the current exponential growth path until the Internet and in particular the TCP/IP stack is given the ability to authenticate and that only through a collaborative effort by all stakeholders of the Internet system can the other major Cyber security issues be resolved especially as it relates to envisioning and fashioning new Cyber security centric technologies.
by Charles M. Iheagwara.
S.M.in Engineering and Management
Zhang, Shouming. "Security optimised optimal power flow." Thesis, Brunel University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320858.
Повний текст джерелаSt, Leger Aaron Nwankpa Chika O. "Power system security assessment through analog computation /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2815.
Повний текст джерелаSt, Leger Aaron. "Power system security assessment through analog computation /." Click for resource, 2008. http://hdl.handle.net/1860/2815.
Повний текст джерелаDutta, Saurabh. "Striking a balance between usability and cyber-security in IoT devices/." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113508.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 67-74).
Today more and more physical objects are being connected to internet. The Internet of Things, or loT, is dramatically changing the way of living and the way we interact with things and each other. Home doors can be opened remotely with a watch, cars' performance can be upgraded remotely, devices monitor health and send updates to physicians remotely. loT technology has made some labor-intensive jobs simple and has the potential to simplify and enhance nearly every aspect of our lives. On the other hand, increased levels of high profile cyber security breaches in recent years have made it clear how important it is to make sure these devices are trustworthy and secure. While most users are aware of how critical it is to secure their laptops, mobile devices, and apps, due to the seamless ways in which loT devices integrates into our daily lives, users are often unaware of risks associated with them. At the same time, IoT device makers are aggressively releasing new products in a mad race to establish themselves in this emerging market. Increased pressure to differentiate on usability based functionalities has spurred products and features that are not properly vetted for security. Gartner predicts that by 2020, more than 25% of identified enterprise attacks will involve IoT, though loT will account for only 10% of IT security budgets. As loT continues to grow, vendors will favor usability over security and IT security practitioners remain unsure of the correct amount of acceptable risk.
by Saurabh Dutta.
S.M. in Engineering and Management
De, Arizon Paloma. "Online power system security classifier and enhancement control." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/NQ48625.pdf.
Повний текст джерелаEl-Werfelli, Mahmud H. "Genetic algorithms applications to power system security schemes." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518121.
Повний текст джерелаIn this research, genetic algorithms and expert systems are employed, as optimization methods, to identify the best amount of load shedding and island formation for the defence plan and the shortest path to rebuild the power system for the restoration plan. In the process of designing the power system security scheme, the majority of the electromechanical power system security constraints are considered.
It is well known that power system optimization problems often have a huge solution space. In this regard, many successful techniques have been used to reduce the size of the solution spaces associated with the optimization of the power system security schemes in this work. The Libyan power system is used as an industrial case study to validate the practicality of the research approaches.
The results clearly show that the new methods that have been researched in this PhD work have shown great success. Using the Libyan power system, the optimized defence plan has been compared to the current defence plan. The results of this comparison have shown that the optimized defence plan outperforms the current one. Regarding the optimized restoration plan, the results present the fact that the Libyan power system can be restored in reasonable time.
Blom, Rikard. "Advanced metering infrastructure reference model with automated cyber security analysis." Thesis, KTH, Elkraftteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-204910.
Повний текст джерелаEuropeiska Unionen har satt upp ett mål att installera nära 200miljoner smarta elmätare innan år 2020, spritt utöver Europa, implementeringen ledertill en rejäl ökning av känsliga dataflöden för El-distributörer och intresset av cyberattacker ökar. Både ingående och utgående information behöver processas och lagraspå olika IT- och OT-system beroende på informationen. Höga krav gällande ITsäkerhet ställs för att skydda till exempel känslig kundinformation samt en mängdvarierande tjänster och funktioner som är implementerade i systemen. Typer avattacker är till exempel om någon lyckats få kontroll over eltillgängligheten och skullestänga av elektriciteten till hushåll vilket skulle till exempel leda till allvarligafuktskador till följd av läckage från frysen. I den här uppsatsen så har en tillräckligtdetaljerad referens modell för smart elmätar arkitektur tagits fram för att möjliggörasäkerhetsanalyser och för att underlätta för företag i en potentiell implementation avsmart elmätare arkitektur. Ett verktyg som heter securiCAD som är utvecklat avforeseeti har använts för att modellera arkitekturen. securiCAD är ett modelleringsverktyg som använder sig av avancerade beräknings algoritmer för beräkna hur långtid det skulle ta för en professionell penetrationstestare att lyckats penetrera de olikasystem med olika sorters attacker beroende på försvarsmekanismer och hurarkitekturen är uppbyggd. Genom att variera systemens försvar och processer så harfyra scenarion definierats. Med hjälp av resultaten av de fyra scenarierna så harrekommendationer tagits fram. Rekommendationer i korthet: Använd små ochdistinkta nätverkszoner med tydliga regler som till exempel vilka system som fårkommunicera med varandra och vilket håll som kommunikationen är tillåten.Noggranna säkerhetsåtgärder hos systemadministratörens dator. Användningen avIPS: er, genom att placera och använda IPS: er på rätt sätt så kan man fördröjaattacker med mer än 46% enligt jämförelser mellan de olika scenarier.
Abdelaal, Ashraf Khalil Ibrahim. "Expert system applications to electrical power system voltage control and security." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366882.
Повний текст джерелаDuisembiyeva, Akzharkyn. "Automated security analysis of a SCADA system." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286336.
Повний текст джерелаSupervisory control and data acquisition (SCADA) är ett datorsystem för att analysera och monitorera data samt kontrollera anläggningar för industrier såsom energisystem, olja, raffinering av gas och vatten. SCADA tillhör den kategori av kritiska system som krävs för att bibehålla städer och hushålls infrastruktur. Därför är säkerhetsaspekten av ett sådant system av stor roll. De tidiga SCADA systemen var utformade med funktionen som huvudsaklig oro istället för säkerheten då de var monolitiska nätverkssystem utan extern åtkomst. Systemen utvecklades emellertid och SCADA systemen blev inbyggda med webbteknologier så att användare kan monitorera data externt. De här förändringarna förbättrade effektiviteten av monitorering och produktivitet men skapade problemet med potentiella cyber-attacker mot SCADA systemen. Ett sådant exempel är Ukrainas energy systems elavbrott som skedde 2015. Därför är det fördelaktigt för säkerheten av SCADA systemen att skapa en hotmodelleringsteknik för att bättre förstå de kritiska komponenterna av SCADA, hitta potentiella hot och föreslå potentiella förmildrande strategier. Ett problem för utvecklingen av en hotmodell är den stora skillnaden mellan SCADA från traditionella nätverkssystem inom industri. Ett annat stort problem är att SCADA är ett justerbart system och varje SCADA instans kan ha olika komponenter. Därför utvecklar vi i detta arbete ett språk för hotmodellering scadaLang som är specifikt för domänen SCADA system. Vi började med att definiera de huvudsakliga komponenterna av SCADA system, angriparna, attack ytorna och även bygga attacker samt försvarsstrategier. Sen utvecklade vi ett språk för hotmodelleringen som är domänspecifikt, scadaLang som kan skapa en hotmodell för en specifik instans av SCADA där skillnaderna på komponenter och sammankopplingar tas till hänsyn. Som resultat har vi skapat ett språk för hotmodellering för SCADA,verifierat resultat med hjälp av en ingenjör med domänkännedom och föreslagit ett Turing test för att förbättra verifieringen av resultatet som ett framtida arbete.
Cheng, Carol Shaoyu. "A hybrid approach to power system voltage security assessment." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/15469.
Повний текст джерелаJensen, Craig A. "Application of computational intelligence to power system security assessment /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/5873.
Повний текст джерелаRaoofsheibani, Davood [Verfasser]. "Online Power System Security Analysis and State Prediction : Enhanced Power System Models and Tools / Davood Raoofsheibani." Düren : Shaker, 2021. http://d-nb.info/1240853947/34.
Повний текст джерелаHamon, Camille. "Probabilistic security management for power system operations with large amounts of wind power." Doctoral thesis, KTH, Elektriska energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-166398.
Повний текст джерелаQC 20150508
Formby, David. "A physical overlay framework for insider threat mitigation of power system devices." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53107.
Повний текст джерелаZavadilová, Patrícia. "Návrh, tvorba a implementace softwarové aplikace ve firemním prostředí." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2021. http://www.nusl.cz/ntk/nusl-444603.
Повний текст джерелаNiebur, Dagmar. "Kohonen self-organizing neural network for power system security assessment /." [S.l.] : [s.n.], 1994. http://library.epfl.ch/theses/?nr=1244.
Повний текст джерелаLiu, Ruidong. "Power system stability scanning and security assessment using machine learning." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/19584.
Повний текст джерелаKarray, Khaled. "Cyber-security of connected vehicles : contributions to enhance the risk analysis and security of in-vehicle communications." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT023.
Повний текст джерелаDuring the last decade, technological advances have made the car more and more connected to the outside world. On the flip side, thistechnological transformation has made modern vehicles subject to advanced cyber attacks. The cyber-physical architectures of automotive systems were not designed with security in mind. With the integration of connected platforms into these cyberphysical systems, the threat landscape has radically changed. Lately, multiple security breaches targeting different car manufacturers have been reported mainly by the scientific community. This makes security a critical concern, with a high impact especially on future autonomous driving. In order to address this gap, rigorous security engineering needs to be integrated into the design process of an automotive system and new protection methods adapted to the specificities of the vehicle systems must be introduced. Threat modeling and risk analysis are essential building blocks of this process. In this context, attack trees proved to be a reasonably good way to model attack steps. Nevertheless, given the diversity of architectures, it can quickly become a burden to draw attack trees for all architectures. This thesis tackles the issues of security of connected vehicles. The proposed approach allows enhancing the threat analysis with the automated generation of attack tree used to assist in the risk assessment step. We also propose novel and efficient protection mechanisms for in-vehicle communication networks capable of coping with existing cyber-physical attacks
Hassani, Raihana. "Security evaluation of a smart lock system." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-291189.
Повний текст джерелаCyberattacker är ett ökande problem i samhället idag. De ökar markant, särskilt mot IoT-produkter, såsom smarta lås. Detta projekt syftar till att utvärdera säkerheten i Verisures smarta låssystem i hopp om att bidra till en säkrare utveckling av IoT-produkter och belysa de befintliga bristerna i dagens samhälle. Detta uppnås genom att identifiera och försöka utnyttja potentiella sårbarheter med hotmodellering och penetrationstestning. Resultaten visade att systemet är relativt säkert. Inga större sårbarheter hittades, bara några svagheter, inklusive möjligheten till en lyckad DoS-attack, inkonsekvent lösenordspolicy, möjligheten att få känslig information från en användare och kloning av nyckelbrickan som används för att låsa/låsa upp smarta låset.
Choudhari, Ashish. "Adaptive Scheduling in a Distributed Cyber-Physical System: A case study on Future Power Grids." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1118.
Повний текст джерелаDayanikli, Gokcen Yilmaz. "Electromagnetic Interference Attacks on Cyber-Physical Systems: Theory, Demonstration, and Defense." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/104862.
Повний текст джерелаDoctor of Philosophy
The secure operation of an electronic system depends on the integrity of the signals transmitted from/to components like sensors, actuators, and controllers. Adversaries frequently aim to block or manipulate the information carried in sensor and actuation signals to disrupt the operation of the victim system with physical phenomena, e.g., infrared light or acoustic waves. In this dissertation, it is shown that low-power electromagnetic (EM) waves, with specific frequency and form devised for the victim system, can be utilized as an attack tool to disrupt, and, in some scenarios, control the operation of the system; moreover, it is shown that these attacks can be mitigated with hardware-level countermeasures. In Chapter 2, the attacks are applied to electric motors on an unmanned aerial vehicle (UAV), and it is observed that an attacker can block (i.e., crash of the UAV) or control the UAV motion with EM waves. In Chapter 3, it is shown that digital communication systems are not resilient against intentional electromagnetic interference (IEMI), either. Low–power EM waves can be utilized by attackers to replace the data in serial communication systems with a success rate %98 or more. In Chapter 4, the attacks are applied to the sensors and actuators of electric vehicle chargers with low–cost over–the–shelf amplifiers and antennas, and it is shown that EM interference attacks can manipulate the sensor data and boosts the current supplied to the EV, which can result in overheating and fire. To ensure secure electronic system operation, hardware–level defense mechanisms are discussed and validated with analytical solutions, simulations, and experiments.