Preserving Source- and Sink-location Privacy in Sensor Networks

Protecting the location privacy of source and sink nodes in a sensor network is an important problem. Source-location privacy is to prevent event source tracking by adversaries and sink-location privacy is to protect sink nodes from adversaries who try to disrupt the sensor network. In this paper, we propose a constant-rate broadcast scheme for ensuring their location privacy. This scheme (1) equalizes traffic patterns of the sensor network to deal with eavesdropping and (2) minimizes the routing information of each sensor node to deal with node compromising. We further reduce the overhead of the proposed scheme by proposing a forwarder-driven broadcast (FdB) scheme that allows efficient multiple broadcasts with smaller buffer usage. Analysis and evaluation results show that FdB can support multiple broadcasts with small message delivery time and buffer usage.1111Ysciescopu

A Survey on Wireless Security: Technical Challenges, Recent Advances and Future Trends

This paper examines the security vulnerabilities and threats imposed by the inherent open nature of wireless communications and to devise efficient defense mechanisms for improving the wireless network security. We first summarize the security requirements of wireless networks, including their authenticity, confidentiality, integrity and availability issues. Next, a comprehensive overview of security attacks encountered in wireless networks is presented in view of the network protocol architecture, where the potential security threats are discussed at each protocol layer. We also provide a survey of the existing security protocols and algorithms that are adopted in the existing wireless network standards, such as the Bluetooth, Wi-Fi, WiMAX, and the long-term evolution (LTE) systems. Then, we discuss the state-of-the-art in physical-layer security, which is an emerging technique of securing the open communications environment against eavesdropping attacks at the physical layer. We also introduce the family of various jamming attacks and their counter-measures, including the constant jammer, intermittent jammer, reactive jammer, adaptive jammer and intelligent jammer. Additionally, we discuss the integration of physical-layer security into existing authentication and cryptography mechanisms for further securing wireless networks. Finally, some technical challenges which remain unresolved at the time of writing are summarized and the future trends in wireless security are discussed.Comment: 36 pages. Accepted to Appear in Proceedings of the IEEE, 201

Supporting Business Privacy Protection in Wireless Sensor Networks

With the pervasive use of wireless sensor networks (WSNs) within commercial environments, business privacy leakage due to the exposure of sensitive information transmitted in a WSN has become a major issue for enterprises. We examine business privacy protection in the application of WSNs. We propose a business privacy-protection system (BPS) that is modeled as a hierarchical profile in order to filter sensitive information with respect to enterprise-specified privacy requirements. The BPS aims at solving a tradeoff between metrics that are defined to estimate the utility of information and the business privacy risk. We design profile, risk assessment, and filtration agents to implement the BPS based on multiagent technology. The effectiveness of our proposed BPS is validated by experiments

Privacy in wireless sensor networks using ring signature

AbstractThe veracity of a message from a sensor node must be verified in order to avoid a false reaction by the sink. This verification requires the authentication of the source node. The authentication process must also preserve the privacy such that the node and the sensed object are not endangered. In this work, a ring signature was proposed to authenticate the source node while preserving its spatial privacy. However, other nodes as signers and their numbers must be chosen to preclude the possibility of a traffic analysis attack by an adversary. The spatial uncertainty increases with the number of signers but requires larger memory size and communication overhead. This requirement can breach the privacy of the sensed object. To determine the effectiveness of the proposed scheme, the location estimate of a sensor node by an adversary and enhancement in the location uncertainty with a ring signature was evaluated. Using simulation studies, the ring signature was estimated to require approximately four members from the same neighbor region of the source node to sustain the privacy of the node. Furthermore, the ring signature was also determined to have a small overhead and not to adversely affect the performance of the sensor network

Privacy Preserving from global eavesdropper in Wireless Sensor Network Using Routing Technique

Various sensor network security schemes care for the content of messages, while the related information is left defenceless by divulge the location of the monitored objects. Preserving location privacy is essential and one of the largely challenging problems in lots of mission crucial sensor network applications. Previous solutions are principally designed to defend privacy from regional attackers who eavesdrop on traffic in a petite region at a moment. However, they can be effortlessly defeated by abundantly motivated global attackers that be able to trace the entire network’s communication proceedings. Although a few topical privacy solutions are proposed adjacent to global attackers, they experience from significant communication transparency as they inject dummy traffic or send messages in a globally synchronized method. As a result, they devour a lot of energy to maintain a required privacy level that craft the network lifetime diminutive. We propose an energy-efficient source location privacy preserving solution, handle the Energy Efficient Location Privacy method beside global attackers (E-LPG). E-LPG hides inventive source locations through a spatial scatter of messages with stealthy wormholes and owing to a temporal scatter using random setback when endorsed With a imperfect number of wormholes, E-LPG can accomplish a high privacy level lacking incurring further communication overhead. We evaluated the effectiveness and efficiency of E-LPG owing to theoretical analysis and general simulations. We have shown that E-LPG also generate dramatic synergistic consequence when used among other privacy schemes accompaniment

Privacy models in wireless sensor networks: a survey

Wireless Sensor Networks (WSNs) are attracting attention from the research community. One of the key issues is to provide them with privacy protection. In recent years, a huge amount of contributions has been focused on this area. Surveys and literature reviews have also been produced to give a systematic view of the different approaches taken. However, no previous work has focused on privacy models, that is, the set of assumptions made to build the approach. In particular, this paper focuses on this matter by studying 41 papers of the last 5 years. We highlight the great differences appearing among related papers that could make them incompatible to be applied simultaneously. We propose a set of guidelines to build comprehensive privacy models so as to foster their comparability and suitability analysis for different scenarios.This work was supported by the MINECO Grant TIN2013-46469-R (Security and Privacy in the Internet of You (SPINY)) and the CAM Grant S2013/ICE-3095 (Cybersecurity,Data, and Risks (CIBERDINE)), which is cofunded by EuropeanFunds (FEDER). Furthermore, J.M. de Fuentes and L. González-Manzano were also partially supported by the Programa de Ayudas a la Movilidad of Carlos III University of Madrid

Assessing the performance of phantom routing on source location privacy in wireless sensor networks

As wireless sensor networks (WSNs) have been applied across a spectrum of application domains, the problem of source location privacy (SLP) has emerged as a significant issue, particularly in safety-critical situations. In seminal work on SLP, phantom routing was proposed as an approach to addressing the issue. However, results presented in support of phantom routing have not included considerations for practical network configurations, omitting simulations and analyses with larger network sizes. This paper addresses this shortcoming by conducting an in-depth investigation of phantom routing under various network configurations. The results presented demonstrate that previous work in phantom routing does not generalise well to different network configurations. Specifically, under certain configurations, it is shown that the afforded SLP is reduced by a factor of up to 75