Abstract Online social networks have become a predominant service on the web collecting huge amount of users’ information. It is drastically revolutionizing the way people interact. Publishing data of social network users for researchers, academicians, advertising organizations etc. has raised many serious privacy implications. Lots of techniques have been proposed for preserving privacy of individuals handling different types of attack scenarios used by adversaries.... Online social networks have become a predominant service on the web collecting huge amount of users’ information. It is drastically revolutionizing the way people interact. Publishing data of social network users for researchers, academicians, advertising organizations etc. has raised many serious privacy implications. Lots of techniques have been proposed for preserving privacy of individuals handling different types of attack scenarios used by adversaries. In this paper, we address a new attack i.e. mutual friends attack model, in which an adversary can identify the victim nodes by using knowledge about the number of their mutual friends. An algorithm ‘Optimized K-anonymization’ has been devised that can deal with two types of attacks i.e. degree attacks and number of mutual friends attacks. The experimental results illustrate that our proposed algorithm can preserve the identification of individuals and subsequently maintain the utility of data. Classification: CCS → Security and Privacy → Human and Societal Aspects of Security and Privacy → Privacy Protections Read More Read Less

Abstract Wireless sensor networks (WSNs) are composed of many low cost, low power devices with sensing, local processing and wireless communication capabilities. The major limitation of wireless sensor network is energy and network lifetime. In this paper, the cluster routing protocol LEACH (Low-Energy Adaptive Clustering Hierarchy) is considered and enhanced. This paper proposes a clustering routing protocol named Enhanced LEACH, which... Wireless sensor networks (WSNs) are composed of many low cost, low power devices with sensing, local processing and wireless communication capabilities. The major limitation of wireless sensor network is energy and network lifetime. In this paper, the cluster routing protocol LEACH (Low-Energy Adaptive Clustering Hierarchy) is considered and enhanced. This paper proposes a clustering routing protocol named Enhanced LEACH, which extends LEACH protocol by selecting a cluster head according to the minimum distance to the base station, which plays an important role in reducing power consumption in cluster head nodes and in the overall network. The simulation results show that Enhanced LEACH outperforms LEACH in terms of network lifetime and power consumption minimization. Read More Read Less

Abstract We tackle stability problems within a cloud data-base frame that uses the Database as a Service display. In this a version, a data proprietor transactions its advice to a cloud data-base pro company. To offer advice stability, fragile data is authenticated from the Data-Owner until it’s moved into the Service Provider. Existing security ideas, whatever the situation, are simply largely homomorphic as in... We tackle stability problems within a cloud data-base frame that uses the Database as a Service display. In this a version, a data proprietor transactions its advice to a cloud data-base pro company. To offer advice stability, fragile data is authenticated from the Data-Owner until it’s moved into the Service Provider. Existing security ideas, whatever the situation, are simply largely homomorphic as in all those had been designed to empower one definite type of calculation to be achieved on encrypted data. These recent plans cannot be integrated to respond real usable questions which have surgeries of varied kinds. We advocate and dissect a secure question dealing with frame (VRS-DB) on societal tables along with also an arrangement of basic directors on encoded data that enable information inter-operability, allowing a broad selection of SQL queries to become ready from the Service-Provider on data that is authenticated. We show that our security conspire is protected from 2 forms of threats also that it’s basically proficient. Read More Read Less