published_or_final_version / Comparative Asian Studies / Master / Master of Arts

Information security is one of the major challenges for organizations that critically depend on information systems to conduct their businesses. Ensuring safety of information and technology resources has become the top priority for many organizations since the consequences of failure can be devastating. Many organizations recognize that their employees, who are often considered as the weakest link in information security, can be a great resource as well to fight against information security-related risks. The key, however, is to ensure that employees comply with information security related rules and regulations of the organization. Therefore, understanding of compliance behavior of an employee is crucial for organizations to effectively leverage their human capital to strengthen their information security. This research aims at identifying antecedences of an employee’s compliance with the information security policy (ISP) of his/her organization. Specifically, we address how employees without any malicious intent choose to comply with requirements of the ISP with regards to protecting the information and technology resources of their organizations. Drawing on the Theory of Planned Behavior, we show an employee’s attitude towards compliance results in his/her intention to comply with the ISP. Of those, Benefit of Compliance and Cost of Non-Compliance are shown to be shaped by positive and negative reinforcing factors; such as, Intrinsic Benefit, Safety of Resources, Rewards and Intrinsic Cost, Vulnerability of Resources, and Sanctions, respectively. We also investigate the role of information security awareness on an employee’s ISP compliance behavior. As expected, we show that information security awareness positively influences attitude towards compliance. We also show that information security awareness positively influences the perception of reinforcing factors and negatively increases perception of the Cost of Compliance. As organizations strive to get their employees to follow their information security rules and regulations, our study sheds light on the role of an employee’s information security awareness and his/her beliefs about the rationality of compliance and non-compliance with the ISP.

Modern networked systems are complex in such a way that assessing the security of them is a difficult task. Security models are widely used to analyse the security of these systems, which are capable of evaluating the complex relationship between network components. Security models can be generated by identifying vulnerabilities, threats (e.g., cyber attacks), network configurations, and reachability of network components. These network components are then combined into a single model to evaluate how an attacker may penetrate through the networked system. Further, countermeasures can be enforced to minimise cyber attacks based on security analysis. However, modern networked systems are becoming large sized and dynamic (e.g., Cloud Computing systems). As a result, existing security models suffer from scalability problem, where it becomes infeasible to use them for modern networked systems that contain hundreds and thousands of hosts and vulnerabilities. Moreover, the dynamic nature of modern networked systems requires a responsive update in the security model to monitor how these changes may affect the security, but there is a lack of capabilities to efficiently manage these changes with existing security models. In addition, existing security models do not provide functionalities to capture and analyse the security of unknown attacks, where the combined effects of both known and unknown attacks can create unforeseen attack scenarios that may not be detected or mitigated. Therefore, the three goals of this thesis are to (i) develop security modelling and analysis methods that can scale to a large number of network components and adapts to changes in the networked system; (ii) develop efficient security assessment methods to formulate countermeasures; and (iii) develop models and metrics to incorporate and assess the security of unknown attacks. A lifecycle of security models is introduced in this thesis to concisely describe performance and functionalities of modern security models. The five phases in the lifecycle of security models are: (1) Preprocessing, (2) Generation, (3) Representation, (4) Evaluation, and (5) Modification. To achieve goal (i), a hierarchical security model is developed to reduce the computational costs of assessing the security while maintaining all security information, where each layer captures different security information. Then, a comparative analysis is presented to show the scalability and adaptability of security models. The complexity analysis showed that the hierarchical security model has better or equivalent complexities in all phases of the lifecycle in comparison to existing security models, while the performance analysis showed that in fact it is much more scalable in practical network scenarios. To achieve goal (ii), security assessment methods based on importance measures are developed. Network centrality measures are used to identify important hosts in the networked systems, and security metrics are used to identify important vulnerabilities in the host. Also, new network centrality measures are developed to improvise the lack of accuracy of existing network centrality measures when the attack scenarios consist of attackers located inside the networked system. Important hosts and vulnerabilities are identified using efficient algorithms with a polynomial time complexity, and the accuracy of these algorithms are shown as nearly equivalent to the naive method through experiments, which has an exponential complexity. To achieve goal (iii), unknown attacks are incorporated into the hierarchical security model and the combined effects of both known and unknown attacks are analysed. Algorithms taking into account all possible attack scenarios associated with unknown attacks are used to identify significant hosts and vulnerabilities. Approximation algorithms based on dynamic programming and greedy algorithms are also developed to improve the performance. Mitigation strategies to minimise the effects of unknown attacks are formulated on the basis of significant hosts and vulnerabilities identified in the analysis. Results show that mitigation strategies formulated on the basis of significant hosts and vulnerabilities can significantly reduce the system risk in comparison to randomly applying mitigations. In summary, the contributions of this thesis are: (1) the development and evaluation of the hierarchical security model to enhance the scalability and adaptability of security modelling and analysis; (2) a comparative analysis of security models taking into account scalability and adaptability; (3) the development of security assessment methods based on importance measures to identify important hosts and vulnerabilities in the networked system and evaluating their efficiencies in terms of accuracies and performances; and (4) the development of security analysis taking into account unknown attacks, which consists of evaluating the combined effects of both known and unknown attacks.

Information security is one of the major challenges for organizations that critically depend on information systems to conduct their businesses. Ensuring safety of information and technology resources has become the top priority for many organizations since the consequences of failure can be devastating. Many organizations recognize that their employees, who are often considered as the weakest link in information security, can be a great resource as well to fight against information security-related risks. The key, however, is to ensure that employees comply with information security related rules and regulations of the organization. Therefore, understanding of compliance behavior of an employee is crucial for organizations to effectively leverage their human capital to strengthen their information security. This research aims at identifying antecedences of an employee’s compliance with the information security policy (ISP) of his/her organization. Specifically, we address how employees without any malicious intent choose to comply with requirements of the ISP with regards to protecting the information and technology resources of their organizations. Drawing on the Theory of Planned Behavior, we show an employee’s attitude towards compliance results in his/her intention to comply with the ISP. Of those, Benefit of Compliance and Cost of Non-Compliance are shown to be shaped by positive and negative reinforcing factors; such as, Intrinsic Benefit, Safety of Resources, Rewards and Intrinsic Cost, Vulnerability of Resources, and Sanctions, respectively. We also investigate the role of information security awareness on an employee’s ISP compliance behavior. As expected, we show that information security awareness positively influences attitude towards compliance. We also show that information security awareness positively influences the perception of reinforcing factors and negatively increases perception of the Cost of Compliance. As organizations strive to get their employees to follow their information security rules and regulations, our study sheds light on the role of an employee’s information security awareness and his/her beliefs about the rationality of compliance and non-compliance with the ISP.

Thesis (Ph. D.)--Old Dominion University, 2002. / Vita. Includes bibliographical references (leaves 246-266).

Thesis (M.A. in Security Studies (Homeland Security and Defense))--Naval Postgraduate School, September 2005. / Thesis Advisor(s): Harold Trinkunas. AD-A439 329. Includes bibliographical references (p. 57-62). Also available online.

Cloud computing is one of the most promising technologies for backup and data storage that provides flexible access to data. Cloud computing plays a vital role in remote backup. It is so unfortunate that this computing technique has flaws that thrilled and edgy end users in implementing it effectively. These flaws include factors like lack of integrity, confidentiality and privacy to information. A secure cloud is impossible unless the computer-generated environment is appropriately secured. In any form of technology it is always advisable that security challenges must be prior identified and fixed before the implementation of that particular technology. Primarily, this study will focus on finding security issues in cloud computing with the objective of finding concerns like credential theft and session management in the ―Cloud‖. Main arguments like HTTP banner disclosure, Bash ―ShellShock‖ Injection and password issues were discovered during the stages of study implementation. These challenges may provide information that will permit hackers in manipulating and exploiting cloud environment. Identifying credential theft and session management in cloud-based file sharing technologies a mixed method approach was implemented throughout the course of the study due to the nature of study and unity of analysis. Penetration tests were performed as security testing technique. Prevention and guideline of security threats leads to a friendly and authentic world of technology.

abstract: Compartmentalizing access to content, be it websites accessed in a browser or documents and applications accessed outside the browser, is an established method for protecting information integrity [12, 19, 21, 60]. Compartmentalization solutions change the user experience, introduce performance overhead and provide varying degrees of security. Striking a balance between usability and security is not an easy task. If the usability aspects are neglected or sacrificed in favor of more security, the resulting solution would have a hard time being adopted by end-users. The usability is affected by factors including (1) the generality of the solution in supporting various applications, (2) the type of changes required, (3) the performance overhead introduced by the solution, and (4) how much the user experience is preserved. The security is affected by factors including (1) the attack surface of the compartmentalization mechanism, and (2) the security decisions offloaded to the user. This dissertation evaluates existing solutions based on the above factors and presents two novel compartmentalization solutions that are arguably more practical than their existing counterparts. The first solution, called FlexICon, is an attractive alternative in the design space of compartmentalization solutions on the desktop. FlexICon allows for the creation of a large number of containers with small memory footprint and low disk overhead. This is achieved by using lightweight virtualization based on Linux namespaces. FlexICon uses two mechanisms to reduce user mistakes: 1) a trusted file dialog for selecting files for opening and launching it in the appropriate containers, and 2) a secure URL redirection mechanism that detects the user’s intent and opens the URL in the proper container. FlexICon also provides a language to specify the access constraints that should be enforced by various containers. The second solution called Auto-FBI, deals with web-based attacks by creating multiple instances of the browser and providing mechanisms for switching between the browser instances. The prototype implementation for Firefox and Chrome uses system call interposition to control the browser’s network access. Auto-FBI can be ported to other platforms easily due to simple design and the ubiquity of system call interposition methods on all major desktop platforms. / Dissertation/Thesis / Doctoral Dissertation Computer Science 2018

Information security is one of the major challenges for organizations that critically depend on information systems to conduct their businesses. Ensuring safety of information and technology resources has become the top priority for many organizations since the consequences of failure can be devastating. Many organizations recognize that their employees, who are often considered as the weakest link in information security, can be a great resource as well to fight against information security-related risks. The key, however, is to ensure that employees comply with information security related rules and regulations of the organization. Therefore, understanding of compliance behavior of an employee is crucial for organizations to effectively leverage their human capital to strengthen their information security. This research aims at identifying antecedences of an employee’s compliance with the information security policy (ISP) of his/her organization. Specifically, we address how employees without any malicious intent choose to comply with requirements of the ISP with regards to protecting the information and technology resources of their organizations. Drawing on the Theory of Planned Behavior, we show an employee’s attitude towards compliance results in his/her intention to comply with the ISP. Of those, Benefit of Compliance and Cost of Non-Compliance are shown to be shaped by positive and negative reinforcing factors; such as, Intrinsic Benefit, Safety of Resources, Rewards and Intrinsic Cost, Vulnerability of Resources, and Sanctions, respectively. We also investigate the role of information security awareness on an employee’s ISP compliance behavior. As expected, we show that information security awareness positively influences attitude towards compliance. We also show that information security awareness positively influences the perception of reinforcing factors and negatively increases perception of the Cost of Compliance. As organizations strive to get their employees to follow their information security rules and regulations, our study sheds light on the role of an employee’s information security awareness and his/her beliefs about the rationality of compliance and non-compliance with the ISP. / Business, Sauder School of / Graduate

This study originated from the realisation that the information security industry has identified the information security policy as one of the most important information security management controls. Within the industry there are, however, differing views as to what constitutes an information security policy, what it should contain, how it should be developed and how it should best be disseminated and managed. Numerous organisations claim to have an information security policy, but admit that it is not an effective control. The principal aim of this study is to make a contribution to the information security discipline by defining what an information security policy is, where it fits into the broader information security management framework, what elements an effective policy should contain, how it should be disseminated and how the document is best kept relevant, practical, up-to-date and efficient. The study develops and documents various processes and methodologies needed to ensure the effectiveness of the information security policy, such as the dissemination process and the information security policy management lifecycle. The study consists of five parts, of which Part I serves as introduction to the research topic. It provides background information to the topic and lays the foundation for the rest of the dissertation. Chapter 1 specifically deals with the research topic, the motivation for it and the issues addressed by the dissertation. Chapter 2 looks at the concept of information security management and what it consists of, highlighting the role an information security policy has to play in the discipline. Chapter 3 introduces the various international information security standards and codes of practice that are referred to, examined and analysed in the dissertation. This chapter specifically highlights how and to what extent each of these address the topic of the information security policy. Part II introduces the concept of the information security policy. Chapter 4 provides the background to what an information security policy is and where it fits into the broader structure of an organisation’s governance framework. Chapter 5 specifies what an effective information security policy is and what components are needed to ensure its success as an information security control. Part III expands the components of an effective information security policy as introduced in Chapter 5. This part consists of Chapters 6 to 8, with each of these addressing a single component. Chapter 6 further investigated the development of the information security policy. The dissemination of the document is discussed in Chapter 7 and Chapter 8 expands the concept of the information security policy management lifecycle. Part IV consists of Chapter 9, which deals with a case study applying the various processes and methodologies defined in the previous part. The case study deals with a fictitious organisation and provides detailed background information to indicate how the organisation should approach the development and dissemination of the information security policy. Some of the examples constructed from the case study include a sample information security policy and a presentation to be used as introduction to the information security policy. The dissertation is concluded in Chapter 10. This chapter provides a summarised overview of the research and the issues addressed in it. / Prof. J.H.P. Ehlers