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 20 of 88 for “"Security Mechanisms"”.
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Novel security mechanisms for wireless sensor networks
… intend to interfere with operations. Existing security mechanisms cannot always be directly transferred to the application domain of WSNs, and in some cases even novel methods are desirable to give increased protection to these systems. The aim of the work presented in this thesis is to augment …
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A Comparison of the Usability of Security Mechanisms Provided by iOS and Android
<p>The Open Web Application Security Project identifies that the number one vulnerability in mobile applications is the misuse of platform-provided security mechanisms. This means that platforms like iOS and Android, which now account for 99.8\% of the mobile phone market, are providing mechanisms …
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End-to-end security mechanisms for the optimized link state routing protocol for wireless ad hoc networks
… general, highly vulnerable to various forms of security attacks. A routing protocol is vital to the functioning of a wireless ad hoc network, and hence, security needs to be present to negate any potential malicious influences. However, providing efficient security mechanisms for such routing …
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The mining legacy in South Africa - a superfund sized problem or a trust fund baby? a critical analysis of the market-based instruments applicable to mining, with specific focus on financial security mechanisms and suggestions for a new approach
Includes abstract. Includes bibliographical references.
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Holistic Security Requirements Engineering for Socio-Technical Systems
Security has been a growing concern for large organizations, especially financial and gov- ernmental institutions, as security breaches in the systems they depend have repeatedly resulted in losses of billions per year, and this cost is on the rise. A primary reason for these breaches is the …
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An Intelligent Authentication Infrastructure for Ubiquitous Computing Environments
… paradigm brings forth new challenges to security and privacy, which cannot be addressed by mere adaptation of existing security and privacy mechanisms. Instead, novel security mechanisms must be devised. In this work, I identify the challenges and requirements of security in ubiquitous …
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Adaptive Quality of Service and Trust Based Lightweight Secure Routing Algorithm for Dense Wireless Sensor Networks
… make them vulnerable to various types of security attacks. Therefore, security mechanisms are needed to secure the network and protect against various security attacks. Conventional security mechanisms, such as cryptography (encryption/decryption) and authentication based systems, are …
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Model-driven security in service-oriented architectures : leveraging security patterns to transform high-level security requirements to technical policies
… and risks. To face these issues, a variety of security mechanisms and approaches is supported by the Web Service specifications. The usage of these security mechanisms and protocols is configured by stating security requirements in security policies. However, security policy languages for SOA …
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Policy-Based Access Control in Federated Clinical Question Answering
… medical records while adding authorization security mechanisms during retrieval to guarantee security of patient data. We propose (i) user identity authentication administered through a trusted federation of per-hospital OpenID Connect servers, (ii) a framework for integrating policy-based …
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An Edge-Based Blockchain-Enabled Framework for Preventing Insider Attacks in Internet of Things (IoT)
… and ubiquity come with a huge price for more security vulnerabilities, making the deployed IoT systems increasingly susceptible to, and prime targets of many different physical and cyber-attacks including insider attacks, thereby growing the overall security risks to the systems. This …
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Mostly-static decentralized information flow control
… and servlets has increased interest in robust mechanisms for ensuring privacy and secrecy. Common security mechanisms such as sand boxing and access control are either too restrictive or too weak -- they prevent applications from sharing data usefully, or allow private information to leak. For …
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Enhancing Security in 802.11 and 802.1 X Networks with Intrusion Detection
… intended coverage area, flaws in 802.11's basic security mechanisms and vulnerabilities found in 802.1 X have been widely publicized. Military bases and navy ships are open targets for wireless attacks. Wireless Intrusion Detection System (WIDS), provides an additional (external) layer of …
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Security for network services delivery of 5G enabled device-to-device communications mobile network
… content-based services. However, this raises new security and delivery challenges. Therefore, research was conducted to address the security issues in delivering NS in 5G enabled D2D communications network. To support D2D communications in 5G, this thesis introduces a Network Services Delivery …
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Securing Cognitive Radios with a Policy Enforcer and Secure Inter-component Transport Mechanisms
… that middleware has to be secured for complete security. This thesis enumerates the requirements of an "ideal" PE. We have described the design and implementation of two possible implementations, which can fulfill some of these requirements. The PE can function similar to a firewall, and be at …
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Multi-layered security in the Internet of the Things
… that there is still a need for suitable security for the Internet of Things. It is however still not clear how existing or emerging security paradigms can be effectively applied to a network of constrained nodes in a lossy communications environment. This thesis provides a survey into …
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Workflow-aware access control for the Internet of Things
… limited processing power, memory, and energy. Security mechanisms designed for traditional computing systems, e.g., computers, servers, or mobile computing devices such as smartphones, may not fit in those constrained IoT devices. Weak security mechanisms and unenforced security measures were …
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Hydraulic Data Preprocessing for Anomaly Based Intrusion Detection on SCADA Level of Water Treatment Systems
… that attackers can use. Although preventative security mechanisms are put into place they too can be defeated, and in this case, a second layer of security is essential. Intrusion detection mechanisms are important reactive security mechanisms to limit the damage done by a successful attack in …
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Secure OFDM System Design for Wireless Communications
… secure wireless communications, physical layer security that is emerging as a complement to the traditional upper-layer security mechanisms is investigated in this dissertation. Five novel techniques toward the physical layer security of wireless communications are proposed. The first two …
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Using detection in depth to counter SCADA-specific advanced persistent threats
… state of each country’s critical infrastructure security. Unfortunately, widely deployed supervisory control and data acquisition (SCADA) protocols provide little to no inherent security controls while traditional security mechanisms prove largely ineffective in industrial control environments. …
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The manipulation of RF-DNA fingerprints through the use of a phase-modulated clock in IEEE802.11a Wi-Fi signals
… an urgent need to augment existing network security mechanisms by leveraging discriminating, waveform characteristics to facilitate the detection of unauthorized devices. RF-DNA fingerprints are a waveform-based approach capable of distinguishing one device from others of the same …
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