Official websites use .mil
Secure .mil websites use HTTPS
Overview
The below lists accounts needed to access the various Cybersecurity – related sites / applications:
MCW / (HCS) Domain Accounts
SPO. Since ICC-CY has migrated to SharePoint online, MCW accounts are no longer required for SPO access, therefore, new accounts requests are no longer necessary. However, users require a valid O365 Account, see below.
MCCAST -NIPR. MCW accounts requests for MCCAST are still being accepted – – a government representative with existing and valid user account must submit on behalf of new user. Contact EIS if you have no one to submit on your behalf. See contact information below. The process has not changed” - be sure to select "MCCAST" for the drop down. See below for additional requirements regarding MCCAST access.
NOTE: The Hybrid Cloud Services (HCS) manage this process - contact them for questions regarding this process @ Phone: 816-705-4970 or email the HCS Watch Officer
MCCAST-SIPR. There is no online request for this except for the "normal" SIPR account request via Remedy. Get with your local ISC to request an account as the MCEN SIPR access is on the MCW domain. Non-USMC users may obtain a USMC SIPR account, but must be sponsored by a USMC representative. Please work through your USMC representative to start the process via the Enterprise Help Desk.
Microsoft Office 365 Account
SPO. The Marine Corps migrated to Office 365 in 2021 and now requires valid and current Office 365 accounts for access.
TEAMS. Another O365 application used by ICC-Cybersecurity, also required a valid and current O365 account.
NOTE: Marines (Military, Civilian and Contractors, contact your local ISC for the process to create an account or see if your organization has crossed over.
See "Authorized Domains" below for customers external to USMC wishing to gain access.
MCCAST
MCCAST is the USMC system used in support of the Accreditation process and required the following valid and active accounts for access:
MCW/ HCS / MCEITS Account. See above for details.
The Hybrid Cloud Services (HCS) manage this process - contact them for questions regarding this process @ Phone: 816-705-4970 or email the HCS Watch Officer
MCCAST Account. Once the HCS account is established, you are ready to submit for a MCCAST account. This gives you specific permissions based upon the requested role.
Visit this link and begin at “Step 2” – only after if your HCS has been activated. (You have provided PIV to Help Desk and you have received notification from them)
What is MCW / HCS / MCEITS?
MCW is the domain that the MCCAST System resides - hence the requirement for this account.
HCS (HYBRID CLOUD SERVICES) is the new name of the Infrastructure, formerly called "MCEITS".
Authorized Domains
As of August 2022, external (non-USMC users may now access our sites and Teams sites. However, access must be requested except for the domains below. All others, contact the CY Information Manger using the "Suggestions About the Website?" contact on the right. NOTE: Contractors must have their government representative submit for their access.
The following domains are authorized access to the USMC SPO (SharePoint Online) Tenant (Updated March 2024):
Navy.mil Users
Navy.mil users who have transitioned to us.navy.mil must continue to use their navy.mil account for access to SPO for now. To do so, "Sign out from your new account, sign into the "old", (ensuring all windows are closed) and try again. Contact your local Helpdesk for support.
If you continue to experience issues, the USMC transition team is aware of this issue. Contact Contact the EIS Help desk @
Office: (816) 705-4865 / eishelpdesk@usmc.mil
Once completed, contact the Cybersecurity Site Information Manager to ensure you have been added to the permission group.
Headquarters Marine Corps IC4 ICC-Cybersecurity Branch
Pentagon, Room 1D253 Washington, DC 20350-3000
For A&A create a MCCAST Support Request for assignment to a representative to assist. See this page for access to MCCAST.
Or contact the MCEN A&A Team via email.
Please contact the Team via email.
Please contact the COMSEC Manager via email.
Please contact the Enterprise Team via email for assistance with policy questions or guidance.
Submit a Social Media Impersonation report.
Contact the IC4 ICC-Cybersecurity Branch Information Manager with suggestions or issues regarding our site.
Last Update: 6 September 2024