Apparatus, systems, and methods may operate to allocating encrypted memory locations to store encrypted information, the information to be encrypted and decrypted using a single hypervisor. Further activity may include permitting access to a designated number of the encrypted memory locations to a single application executed by an associated virtual machine (VM) subject to the hypervisor, and denying access to the designated number of the encrypted memory locations to any other application executed by the associated VM, or any other VM. In some embodiments, the operational state of the associated VM may be restored using the encrypted information. Additional apparatus, systems, and methods are disclosed.