Cloud computing can be defined as the provision of computing resources on-demand over the Internet. Although this might bring a number of advantages to end-users in terms of accessibility and elasticity of costs, problems arise concerning the collection of personal information in the Cloud and the legitimate exploitation thereof. To the extent that most of the content and software application are only accessible online, users have no longer control over the manner in which they can access their data and the extent to which third parties can exploit it.