form raises several privacy and security concerns. Recently, some anonymization techniques have been developed to address …

organisations. However, security concerns and compliance to privacy regulations requiring confidentiality of the data renders … secret. Therefore, there is a need for privacy preserving database operations for querying data residing at different parties …The problem addressed in this paper is how to ensure data privacy concerns when data is shared between multiple …

privacy and security, suffer from one or more anomalies, and hence the problem of securing LBS data is far from being resolved …. In particular, accuracy of results vs. privacy degree, privacy vs. performance, and trust between users are open problems … superiority of our approach over earlier ones dealing with both the ratio of privacy and that of performance. …

operations over encrypted data, also known as privacy homomorphisms, for creating protocols that could enable secure database … mšglich sind. Die BeitrŠge dieser Dissertation sind im Einzelnen: - Wir untersuchen die Eignung sog. Privacy … an untrusted service provider. We explore the limits of the security that is achievable in these scenarios. When …

resources containing personal information across multiple distributed and private databases. However, privacy and security … the existing works use a k-anonymity model for preserving privacy for data subject that offers lower utility. Motivated by … the solutions methods that can be used to preserve the privacy of data while still allowing the data to be used.. Most of …