A Survey on Wireless Sensor Network Security

Wireless sensor networks (WSNs) have recently attracted a lot of interest in the research community due their wide range of applications. Due to distributed nature of these networks and their deployment in remote areas, these networks are vulnerable to numerous security threats that can adversely affect their proper functioning. This problem is more critical if the network is deployed for some mission-critical applications such as in a tactical battlefield. Random failure of nodes is also very likely in real-life deployment scenarios. Due to resource constraints in the sensor nodes, traditional security mechanisms with large overhead of computation and communication are infeasible in WSNs. Security in sensor networks is, therefore, a particularly challenging task. This paper discusses the current state of the art in security mechanisms for WSNs. Various types of attacks are discussed and their countermeasures presented. A brief discussion on the future direction of research in WSN security is also included.Comment: 24 pages, 4 figures, 2 table

Synoptic analysis techniques for intrusion detection in wireless networks

Current system administrators are missing intrusion alerts hidden by large numbers of false positives. Rather than accumulation more data to identify true alerts, we propose an intrusion detection tool that e?ectively uses select data to provide a picture of ?network health?. Our hypothesis is that by utilizing the data available at both the node and cooperative network levels we can create a synoptic picture of the network providing indications of many intrusions or other network issues. Our major contribution is to provide a revolutionary way to analyze node and network data for patterns, dependence, and e?ects that indicate network issues. We collect node and network data, combine and manipulate it, and tease out information about the state of the network. We present a method based on utilizing the number of packets sent, number of packets received, node reliability, route reliability, and entropy to develop a synoptic picture of the network health in the presence of a sinkhole and a HELLO Flood attacker. This method conserves network throughput and node energy by requiring no additional control messages to be sent between the nodes unless an attacker is suspected. We intend to show that, although the concept of an intrusion detection system is not revolutionary, the method in which we analyze the data for clues about network intrusion and performance is highly innovative

Security issues in Internet of Things

The main idea behind the concept of the Internet of Things (IoT) is to connect all kinds of everyday objects, thus enabling them to communicate to each other and enabling people to communicate to them. IoT is an extensive concept that encompasses a wide range of technologies and applications. This document gives an introduction to what the IoT is, its fundamental characteristics and the enabling technologies that are currently being used. However, the technologies for the IoT are still evolving and maturing, leading to major challenges that need to be solved for a successful deployment of the IoT. Security is one of the most significant ones. Security issues may represent the greatest obstacle to general acceptance of the IoT. This document presents an assessment of the IoT security goals, its threats and the security requirements to achieve the goals. A survey on a representative set of already deployed IoT technologies is done to assess the current state of the art with regards to security. For each solution, a description of its functionality, its security options and the issues found in the literature is given. Finally, the common issues are identified and a set of future solutions are given.La idea principal detrás del concepto de Internet de las cosas (IoT) es conectar todo tipo de objetos cotidianos, para permitir comunicarse entre sí y que personas se comuniquen con ellos. IoT es un amplio concepto que abarca una extensa gama de tecnologías y aplicaciones. Este documento da una introducción a lo que es el IoT, sus características fundamentales y las tecnologías que se están utilizando actualmente. Sin embargo, las tecnologías usadas en el IoT todavía están en evolución y madurando, dando lugar a grandes desafíos que deben resolverse para un despliegue exitoso del IoT. La seguridad es uno de las más significativos. Los problemas de seguridad pueden representar el mayor obstáculo para la aceptación general del IoT. Este documento presenta una evaluación de los objetivos de seguridad en el IoT, sus amenazas y los requisitos necesarios para alcanzar dichos objetivos. Se realiza un estudio sobre un conjunto representativo de tecnologías IoT en uso para evaluar su estado actual respecto a la seguridad. Para cada solución, se da una descripción de su funcionalidad, sus protecciones y los problemas encontrados. Finalmente, se identifican los problemas comunes y se dan un conjunto de soluciones futuras.La idea principal darrera del concepte d'Internet de les coses (IoT) és connectar tot tipus d'objectes quotidians, per permetre comunicar-se entre sí i que les persones es comuniquin amb ells. IoT és un ampli concepte que engloba una extensa gamma de tecnologies i aplicacions. Aquest document dona una introducció al que és el IoT, les seves característiques fonamentals i les tecnologies que s'estan utilitzant actualment. No obstant, les tecnologies utilitzades en el IoT encara estan evolucionant i madurant, donant lloc a grans reptes que s'han de resoldre per a un desplegament exitós del IoT. La seguretat és un dels reptes més significatius. Els problemes de seguretat poden representar el major obstacle per l'acceptació general de l'IoT. Aquest document presenta una avaluació dels objectius de seguretat en el Iot, les seves amenaces i els requisits necessaris per assolir aquests objectius. Es realitza un estudi sobre un conjunt representatiu de tecnologies IoT en ús per avaluar el seu estat actual respecte a la seguretat. Per cada solució, es dona una descripció de la seva funcionalitat, les seves proteccions i els problemes trobats. Finalment, s'identifiquen els problemes comuns i es donen un conjunt de solucions futures