An operating system of a mobile device defines an interface for an MDM to ensure security of the device. A private personal MDM (PPMDM) instead interfaces with the operating systems and one or more enterprise MDMs (EMDM) implement security policies through the PPMDM subject to user control. Data may be flagged as associated with an EMDM based on source or location to enable deletion due to theft or disassociation with an enterprise. Blocks or threat detection according to an EMDM policy may be reported to an EMDM in a non-invasive manner.