1. A method, comprising: computing a trust rating for a data requester across one or more dimensions, wherein said computing comprises: identifying said data requester; collecting information regarding said data requester from one or more sources; generating said trust rating for said data requester across said one or more dimensions based on said collected information; summarizing an overall trust rating for said data requester based on said trust ratings for each of said one or more dimensions, wherein said trust ratings for each of said one or more dimensions are weighted based on pre-defined values; and utilizing said computed trust rating to one of grant or deny a request by said data requester to access data associated with one or more data providers; wherein the steps are performed by at least one processor device coupled to a memory, and wherein the method further comprises the steps of: creating and maintaining a global access rule, wherein said global access rule is maintained in a global classification layer; and creating and maintaining a personal access rule for each of said one or more data providers, wherein said personal access rule is maintained in a personal classification layer, wherein the global access rule and personal access rule are further stored in an access rules database.