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Cyber Threat Propagation Modeling in Cyber Physical Systems
Cyber Threat Propagation Modeling in Cyber Physical Systems
Cyber Threat Propagation Modeling in Cyber Physical Systems

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105537
ISBN  
9798263392895
DDC  
001
저자명  
Chen, Yu-Cheng.
서명/저자  
Cyber Threat Propagation Modeling in Cyber Physical Systems
발행사항  
[Sl] : Georgia Institute of Technology, 2022
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2022
형태사항  
127 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Mooney, Vincent;Grijalva, Santiago.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2022.
초록/해제  
요약Cyber-physical attacks on critical industrial control systems are on the rise. These attacks may target individual field cyber-components or the communications network. In the electricity grid, cyber-physical attacks can modify or affect data or software applications such as state estimator demand response, frequency regulation and voltage control. As a result, a cyber-physical attack on the grid can trigger operators to take inappropriate actions which can lead to instability in the power grid and cascading failures with significant consequences. Hence, to ensure a secure and reliable power grid, it is imperative to study the different ways in which the cyber-physical power grid can be compromised and then develop techniques and mechanisms to detect, evaluate and mitigate the propagation and impact of a potential cyber-physical attack.The objective of the research is to model the propagation of cyber-attack in cyberphysical systems. Note that our research should be applicable to all cyber-physical systems, but we use the electricity grid as the main exemplar for our work. We utilize three models:(a) A model based on Markov principles. The Markov model uses a Markov chain to encapsulate the attacker's strategy and probabilities of success/failure of the attack propagating from one node to the next. Each node in the Markov model represents at least one attacker goal in the cyber-physical system.(b) A game-theoretic probabilistic learning attacker, dynamic defender (PLADD) model [1]. PLADD models ongoing contention between defender and attacker for "ownership" of an access control, where attacker ownership implies the attacker has access and defender ownership implies denied attacker access. The PLADD model leverages game theory similar to FlipIt [2] to analyze defender and attacker interactions.(c) The hybrid attack model [3], which combines both Markov and PLADD model. The hybrid attack model (HAM) is a hybrid of (a) and (b). HAM consists of both PLADD games and Markov nodes. In HAM, an attack is split into preparation and execution stages. In HAM, PLADD games are used to model attacker actions in the preparation stage, and the Markov nodes are used to model attacker actions in the execution stage.Additionally, the hybrid attack model is extended to assess risk in a cyber-physical system. The risk assessment allows cyber-physical system operators to quantitatively determine which area of the cyber-physical system is the most vulnerable and requires a security update. Lastly, sensitivity analysis is done on an example power grid scenario to determine the maximum risk value.
일반주제명  
Software
일반주제명  
Computers
일반주제명  
Failure
일반주제명  
Sensitivity analysis
일반주제명  
Success
일반주제명  
Mathematical models
일반주제명  
Electricity distribution
일반주제명  
Graph representations
일반주제명  
Cybersecurity
일반주제명  
Game theory
일반주제명  
Communications networks
일반주제명  
Probability
일반주제명  
Probability distribution
일반주제명  
Access control
일반주제명  
Markov analysis
일반주제명  
Computer science
일반주제명  
Electrical engineering
일반주제명  
Mathematics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aChen,  Yu-Cheng.
■24510▼aCyber  Threat  Propagation  Modeling  in  Cyber  Physical  Systems
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2022
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2022
■300    ▼a127  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Mooney,  Vincent;Grijalva,  Santiago.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2022.
■520    ▼aCyber-physical  attacks  on  critical  industrial  control  systems  are  on  the  rise.  These  attacks  may  target  individual  field  cyber-components  or  the  communications  network.  In  the  electricity  grid,  cyber-physical  attacks  can  modify  or  affect  data  or  software  applications  such  as  state  estimator  demand  response,  frequency  regulation  and  voltage  control.  As  a  result,  a  cyber-physical  attack  on  the  grid  can  trigger  operators  to  take  inappropriate  actions  which  can  lead  to  instability  in  the  power  grid  and  cascading  failures  with  significant  consequences.  Hence,  to  ensure  a  secure  and  reliable  power  grid,  it  is  imperative  to  study  the  different  ways  in  which  the  cyber-physical  power  grid  can  be  compromised  and  then  develop  techniques  and  mechanisms  to  detect,  evaluate  and  mitigate  the  propagation  and  impact  of  a  potential  cyber-physical  attack.The  objective  of  the  research  is  to  model  the  propagation  of  cyber-attack  in  cyberphysical  systems.  Note  that  our  research  should  be  applicable  to  all  cyber-physical  systems,  but  we  use  the  electricity  grid  as  the  main  exemplar  for  our  work.  We  utilize  three  models:(a)  A  model  based  on  Markov  principles.  The  Markov  model  uses  a  Markov  chain  to  encapsulate  the  attacker's  strategy  and  probabilities  of  success/failure  of  the  attack  propagating  from  one  node  to  the  next.  Each  node  in  the  Markov  model  represents  at  least  one  attacker  goal  in  the  cyber-physical  system.(b)  A  game-theoretic  probabilistic  learning  attacker,  dynamic  defender  (PLADD)  model  [1].  PLADD  models  ongoing  contention  between  defender  and  attacker  for  "ownership"  of  an  access  control,  where  attacker  ownership  implies  the  attacker  has  access  and  defender  ownership  implies  denied  attacker  access.  The  PLADD  model  leverages  game  theory  similar  to  FlipIt  [2]  to  analyze  defender  and  attacker  interactions.(c)  The  hybrid  attack  model  [3],  which  combines  both  Markov  and  PLADD  model.  The  hybrid  attack  model  (HAM)  is  a  hybrid  of  (a)  and  (b).  HAM  consists  of  both  PLADD  games  and  Markov  nodes.  In  HAM,  an  attack  is  split  into  preparation  and  execution  stages.  In  HAM,  PLADD  games  are  used  to  model  attacker  actions  in  the  preparation  stage,  and  the  Markov  nodes  are  used  to  model  attacker  actions  in  the  execution  stage.Additionally,  the  hybrid  attack  model  is  extended  to  assess  risk  in  a  cyber-physical  system.  The  risk  assessment  allows  cyber-physical  system  operators  to  quantitatively  determine  which  area  of  the  cyber-physical  system  is  the  most  vulnerable  and  requires  a  security  update.  Lastly,  sensitivity  analysis  is  done  on  an  example  power  grid  scenario  to  determine  the  maximum  risk  value.
■590    ▼aSchool  code:  0078.
■650  4▼aSoftware
■650  4▼aComputers
■650  4▼aFailure
■650  4▼aSensitivity  analysis
■650  4▼aSuccess
■650  4▼aMathematical  models
■650  4▼aElectricity  distribution
■650  4▼aGraph  representations
■650  4▼aCybersecurity
■650  4▼aGame  theory
■650  4▼aCommunications  networks
■650  4▼aProbability
■650  4▼aProbability  distribution
■650  4▼aAccess  control
■650  4▼aMarkov  analysis
■650  4▼aComputer  science
■650  4▼aElectrical  engineering
■650  4▼aMathematics
■690    ▼a0984
■690    ▼a0544
■690    ▼a0405
■690    ▼a0796
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2022
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360499▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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