Virtualization and broadband Internet connections enabled what is known today under the term cloud. Benefits like\nscalability and cost reduction by pay per use agreements are accompanied by potential harm to the users data. Since\nexisting cloud solutions can be considered synonymous with unknown locations and potentially hostile environments\nsecurity protection objectives can not be guaranteed. Motivated by cloud�s potential we propose a way to get rid of\nthis drawback. We present ?-Cloud, a personal secure cloud, that enables users to benefit from cloud computing and\nretain data sovereignty by federating the users own resources. More precisely we present a cloud resource manager\nthat is able to keep control on the devices forming the user�s ?-Cloud as well as the services running on them
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