Methods, systems, and products for computer processing. In one general embodiment, the method comprises running an inner process in the context of an executing thread wherein the thread has an original address space in memory and hiding at least a portion of the memory from the inner process. The inner process may run on the same credentials as the thread. Running the inner process may include creating a new address space for the inner process in the memory and assigning the new address space to the thread, so that the inner process comprises its own address space. The inner process may he allowed to access only the new address space. The kernel may maintain the thread's original address space along with the new address space, so that multiple address spaces exist for a particular thread. The kernel may pass selected data from the thread to the inner process.