1. An apparatus to support secure processing comprising: a storage; a hardware processor coupled to the storage and configured to: execute an operating system (OS) in a first operating environment; execute an OS security routine to recurringly verify an integrity of the OS; execute a challenge routine in a second operating environment that is isolated from the first operating environment to recurringly challenge the OS security routine to provide a measure of the OS security routine; and execute a response routine in the second operating environment to analyze each measure provided by the OS security routine and an elapsed time to receive each measure from the OS security routine to verify an integrity of the OS security routine; a network interface coupled to the hardware processor; and a security server, wherein the response routine causes the hardware processor to receive a first measure from the OS security routine, to receive a first expected measure from the security server via the network interface, and to compare the first measure to the first expected measure to verify the integrity of the OS security routine, and wherein the security server is configured to maintain a copy of the OS security routine and to measure the copy of the OS security routine to derive the first expected measure.