A compliance checker to verify that a device complies with a policy is described. In one embodiment, the compliance checker comprises a compliance checker agent, to initiate the compliance check, in response to receiving the request, and an encryption checker upper driver above a level of a disk encryption driver, and an encryption checker lower driver, below the level of the disk encryption driver with a comparator to determine whether known data read from the upper driver is identical to known data read from the lower driver. The compliance checker plug-in in one embodiment verifies the compliance status of the device, based on the data from the comparator.