1. A method for extracting data items for a task requesting a set of data items in a virtual organization including a plurality of members, the method comprising: determining a set of confidentiality sub-policies associated with the set of data items; determining an information utility sub-policy associated with the task; and retrieving, by a computing device, at least a portion of the set of data items for the task based on an analysis that optimally balances confidentiality and information utility using the set of confidentiality sub-policies and the information utility sub-policy.