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 10 of 10 for “"Sybil attacks"”.
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Data Collection, Dissemination, and Security in Vehicular Ad Hoc Network
… information dissemination in a VANET lies in Sybil attacks, where a single vehicle fakes multiple identities. We propose the Privacy-perserving Detection of Sybil Attack Protocl (P<super>2</super>DAP) scheme to detect such Sybil attacks. The P<super>2</super>DAP method does not require any …
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Phantom jam Sybil attack in connected vehicular networks
… Ad-hoc Networks (VANETs) are vulnerable to Sybil attacks, mostly due to the lack of encryption in BSMs. In VANETs, multiple digital certificates (pseudonyms) are assigned to each vehicle to ensure their privacy. However, malicious nodes can exploit these pseudonyms to create ghost vehicles, …
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Trust management schemes for peer-to-peer networks
… the affects of malicious peers. However, a sybil attack, wherein forging identities is performed to unfairly and arbitrarily influence the reputation of peers in a network or community. To defend against sybil attack, each reported transaction, which is used to calculate trust values, is …
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RSU-Based Intrusion Detection and Autonomous Intersection Response Systems
… (ITS) to prevent, detect and respond to cyberattacks. This research focuses on the detection and response of ITS components to cyberattacks. An Intrusion Detection System (IDS) located on Roadside Units (RSU) was developed to detect misbehavior nodes. This model maintains a 98%-100% accuracy …
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Location based services in wireless ad hoc networks
… (performance) and iv) location clustering based Sybil attack detection in vehicular ad hoc networks (trust). The first contribution of this dissertation is in addressing location privacy in wireless sensor networks. We propose a non-cooperative sensor localization algorithm showing how an …
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An intelligent intrusion detection system for external communications in autonomous vehicles
… in self-driving vehicles from potential attacks. This has been achieved using fuzzification and artificial intelligence. The second contribution is the incorporation of the Integrated Circuit Metrics (ICMetrics) for improved security and privacy. By using the ICMetrics, specific device …
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Robust censorship-resistant communication
… circumvention systems to resist the insider attacks. Tor is one of the most popular censorship circumvention systems; it uses {\it bridges} run by volunteers as proxies to evade censorship. We propose {\it rBridge}--a user reputation system for bridge distribution; it assigns bridges …
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Design and applications of a secure and decentralized Distributed Hash Table
… a given key. DHTs are subject to the well-known Sybil attack, in which an adversary creates many false identities in order to increase its influence and deny service to honest participants. Defending against this attack is challenging because (1) in an open network, creating many fake identities …
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A layered security approach for cooperation enforcement in MANETs
… virtual identity to launch an attack, called a Sybil attack. In the context of reputation-based schemes, a Sybil attacker can disrupt the detection accuracy by defaming other good nodes, self-promoting itself or exchanging bogus positive recommendations about one of its quarantined identities. …
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Trustworthy and scalable anonymous communication
… points of trust, and (c) trust issues due to Sybil attack. In this thesis, we investigate the design of novel approaches to anonymous communication that are scalable, decentralized, and Sybil-resilient. First, we begin by investigating security vulnerabilites in existing P2P anonymity systems, …