This Order in accordance with reference (a) provides cybersecurity policy, procedures, tasks, conditions, and standards implementation guidance applicable to enhance and enable command and control on the MCEN. An Annex providing the policy, procedures, and standards implementation guidance for Marine Corps SCI Networks will be published 180 days from the issuance of this Order. Supplemental cybersecurity guidance, updates, or revisions will be provided through Enterprise Cybersecurity Manuals (ECSMs), Marine Administration (MARADMIN) messages, and Marine Corps Bulletins (MCBUL).

This Order in accordance with reference (b) delineates all organizational actions required to ensure the security of voice video, and data communications, digital information in all of its forms, and the security of the systems and networks where information is stored, accessed, processed, and transmitted. This includes precautions taken to guard against cyber attacks in order to provide an end-to-end secure networking capability to protect and deliver secure information at the right time, to the right place, and in a useable format, enabling commanders to exercise freedom of command and control.

The MCEN is the Marine Corps network-of-networks and approved interconnected network segments supporting the Marine Corps Command, Control, and business process communications. It comprises people, processes, logical and physical infrastructure, architecture, topology, and Cyberspace Operations that operate according to Marine Corps policy. The MCEN is both, the MCEN - NIPRNet (MCEN-N) and the MCEN SIPRNet (MCEN-S); however, this document will refer to both networks as one MCEN.