A computing device and a method for a computing device to control access to data stored on a data store of the device. An access component of the device having control over access to the data. The access component being operative to receive a request for data from a requesting component, identify an assigned access domain of the requesting component and an assigned data domain of the requested data and determine whether the requesting component is authorized to access the data by comparing the assigned access domain and the data domain with permissions specified in a security policy. If the assigned access domain is authorized to access the data domain, the access component may provide access to the requested data.