Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Insider threats"”.
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Securing Software-Defined Network Enabled Enterprises Against Insider Threats
Insider threats are among the most challenging cyber security issues for enterprises, and even the world's most protected organizations have not been immune to them. In the first part of this thesis, considering the recent paradigm shift to Software-Defined Networks (SDNs) and its compelling …
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On the potential of intent-based access control (IBAC) in preventing insider threats
… and identified users who turned into malicious insiders. Therefore, demand exists for designing prevention mechanisms. A non-identity-based authentication measure that is based on the intent of the access request might serve that demand. In this thesis, we test the possibility of detecting …
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An analysis of insider dysfunctional behavours in an accounting information system environment
Insider deviant behaviour in Accounting Information Systems (AIS) has long been recognised as a threat to organisational AIS assets. The literature abounds with a plethora of perspectives in attempts to better understand the phenomenon, however, practitioners and researchers have traditionally …
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Mitigating Insider Threat Risks in Cyber-physical Manufacturing Systems
… Especially, such attacks can be performed by insiders easily but in a more critical manner: Insider Threats. </p><p>Insiders can be defined as anyone who is or has been affiliated with a system. Insiders have knowledge and access authentications of the system's properties, therefore, can …
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Blockchain-Based Zero Trust Threat Detection Framework for the Finance Industry Network
The rapid evolution of cyber threats has made perimeter-based security models inadequate, especially in the financial sector, where data integrity, confidentiality, and regulatory compliance are critical. Despite advances, existing frameworks like Zero Trust still face challenges such as …
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Insider threat simulation and performance analysis of insider detection algorithms with role based models
Insider threat problems are widespread in industry today. They have resulted in huge losses to organizations. The security reports by leading organizations point out the fact that there have been many more insider attacks in recent years than any other form of attack. Detection of these insider …
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User-centered intrusion detection using heterogeneous data
… (i.e. categorical, graph and text) to improve insider threat detection. After aggregating IAM audit data into sessions, we introduce and compare general anomaly detection methods for mixed data to a user identification approach, designed to learn the distinction between normal and malicious …
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On the detection of privacy and security anomalies
… using a Database Management System (DBMS) by insiders as employees of an organisation. One of the data security and privacy concerns is of insider threats, where legitimate users of the system abuse the access privileges they hold. Insider threats come in two flavours; one is an insider threat …
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Cybersecurity Risk Assessment Using Graph Theoretical Anomaly Detection and Machine Learning
… in the quantification of cyber risk due to insider threats. Included in this study is impact assessment by analyzing past incidents caused by internal actors and depicted on the risk matrices, together with datasets on organizational roles of the internal actors.</p>
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User behavior pattern based security provisioning for distributed systems
… be monitored and controlled due to the rise of insider threats. Security analysts in large distributed systems are overwhelmed by the number of system users, the complexity and changing nature of user activities. Identifying user behavior patterns by analyzing audit logs is challenging. Lacking …
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Blockchain-based Architecture for Secured Cyberattack Signatures and Features Distribution
… the participating IDS nodes can stop more attack threats if IDS nodes exchange these attack characteristics among each other. Researchers proposed a cooperative intrusion detection system (CoIDS) to share these attack characteristics effectively. Although this solution enhanced IDS node’s ability …
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Modeling and detecting anomalous topic access in EMR audit logs
… success in developing strategies to detect insider threats in healthcare information systems based on what one might call the random object access model or ROA. This approach models illegitimate users who randomly access records. The goal is to use statistics, machine learning, knowledge of …
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A systems analysis of insider data exfiltration : a decentralized framework for disincentivizing and auditing data exfiltration
… the reality is there is a high frequency of threats from insiders within an organization and that the cost and challenge in detecting these threats is considerable. The issue has affected companies in multiple private sectors (finance, retail) and the public sector is also at risk as apparent …
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Replay and bogus information attacks : simulation and empirical validation of machine learning-based cybersecurity threat detection in connected and autonomous vehicles
… challenges, especially from sophisticated threats such as replay and bogus information attacks. While international standards (e.g., IEEE 1609.2, ETSI TS 103 097) establish baseline security through authentication, encryption, and digital signatures, these controls primarily address …
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Anomalous behaviour detection for cyber defence in modern industrial control systems
… cybercrimes and Advanced Persistent Threats. Besides external factors, the prevalence of insider threats includes malicious intent, accidental hazards and professional errors. The sensing capabilities create opportunities to capture various data types. Apart from operational use, this …
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Design and Analysis of Decoy Systems for Computer Security
… aimed at defending against a range of internal threats, including eaves-dropping on network taps, placement of malware to capture sensitive information, and general insider threats to exfiltrate sensitive information. Although the threats and adversaries may vary, in each context where a system …
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Management and Organizational Influences on the Compliance Behavior of Employees to Reduce Non-malicious IT Misuse Intention
<p>The widespread use of information technology and information systems (IT) throughout corporations, too often includes employees who choose not to follow the stated policies and procedures in performing their job tasks. In many cases, this encompasses employees who mean no harm, but choose not to …