Microsoft Cloud App Security (MCAS) is a cloud security tool that, among many other things, can scan your cloud storage for protected data (such as PII, PCI, HIPAA, etc.). This post will detail enabling MCAS, delegating access, and connecting Office 365. Come back later in the week for a post on configuring a policy to scan OneDrive for files containing an SSN.
There are several ways to license MCAS. You can buy it standalone, bundle it with EMS E3 or A3, EMS E5/A5, M365 E5/A5 Security, or with full M365 E5/A5. There are also subsets of features available when purchasing Office 365 E5/A5 and Azure AD Premium P1 or P2.
Like most Azure services, enabling MCAS is pretty simple. An Azure AD global administrator needs to login to https://portal.cloudappsecurity.com and go through the step of turning on the tenant. That’s it.
Delegate Admin Access
If the AAD global administrator will also be the MCAS administrator, then you don’t need to go through the section. If you need to delegate access to someone else, then follow these steps.
- Click the Gear in the up-right corner.
- Click Manage admin access.
- Find the user in the first box (sorry, as of this writing, there is no group support).
- Select the appropriate role of the new admin.
- Click Add Admin.
Now you’ve delegated access to another user.
Connect to Office 365
To connect MCAS to O365, follow these steps.
- Hover over the Glasses icon in the left toolbar, and select Connected Apps.
- Click the + button and select Office 365.
- Click Connect Office 365.
O365 is now connected to MCAS. MCAS will start looking at the data contained in O365, but will not start creating alerts or flagging files until we create a policy. Come back later in the week for a post about creating a policy to flag American social security numbers.
For information on connecting other providers, see https://docs.microsoft.com/en-us/cloud-app-security/enable-instant-visibility-protection-and-governance-actions-for-your-apps.
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