Microsoft 365
The Microsoft 365 (M365) integration detects a variety of data loss prevention, account misconfiguration, and user security risks in an integrated Microsoft 365 account that could leave you and your organization vulnerable.
This integration covers the following Microsoft 365 products:
Integration prerequisites
- A Microsoft 365 account with an active Microsoft Business Basic, Microsoft Business Standard, Microsoft 365 E3, Microsoft 365 E5, or Microsoft 365 F3 subscription
- Global admin role or equivalent permissions in Microsoft 365
Integration permissions
For the Microsoft 365 integration to function, Cloudflare CASB requires the following delegated Microsoft Graph API permissions:
Application.Read.AllCalendars.ReadDomain.Read.AllGroup.Read.AllInformationProtectionPolicy.Read.AllMailboxSettings.Readoffline_accessRoleManagement.Read.AllUser.Read.AllUserAuthenticationMethod.Read.AllFiles.Read.AllAuditLog.Read.All
These permissions follow the principle of least privilege to ensure that only the minimum required access is granted. To learn more about each permission, refer to the Microsoft Graph permissions documentation.
Security findings
The Microsoft 365 integration currently scans for the following findings, or security risks. Findings are grouped by category and then ordered by severity level.
To stay up-to-date with new CASB findings as they are added, bookmark this page or subscribe to its RSS feed.
User account settings
Keep user accounts safe by ensuring the following settings are maintained. Review password configurations and password strengths to ensure alignment to your organization’s security policies and best practices.
| Finding | Severity |
|---|---|
| FIDO2 authentication method unattested | Low |
| Provisioning error for on-prem user | Low |
| Password expiration disabled for user | Low |
| Password not changed in last 90 days | Low |
| Strong password disabled for user | Low |
| Cloud sync disabled for on-prem user | Low |
| Weak Windows Hello for Business key strength | Low |
| On-prem user not synced in 7 days. | Low |
| User is not a legal adult | Low |
| User configured proxy addresses | Low |
| User account disabled | Low |
File sharing
Get alerted when files in your Microsoft 365 account have their permissions changed to a less secure setting.
To access some file findings, you may need to review shared links. For more information, refer to View shared files.
| Finding | Severity |
|---|---|
| Microsoft File Publicly Accessible Read and Write | Critical |
| Microsoft Folder Publicly Accessible Read and Write | Critical |
| Microsoft File Publicly Accessible Read Only | High |
| Microsoft Folder Publicly Accessible Read Only | High |
| Microsoft File Shared Company Wide Read and Write | Medium |
| Microsoft File Shared Company Wide Read Only | Medium |
| Microsoft Folder Shared Company Wide Read and Write | Medium |
| Microsoft Folder Shared Company Wide Read Only | Medium |
| Calendar shared externally | Low |
Data Loss Prevention (optional)
These findings will only appear if you added DLP profiles to your CASB integration.
| Finding | Severity |
|---|---|
| Microsoft File Publicly Accessible Read and Write with DLP Profile match | Critical |
| Microsoft File Publicly Accessible Read Only with DLP Profile match | Critical |
Third-party apps
Identify and get alerted about the third-party apps that have access to at least one service in your Microsoft 365 domain. Additionally, receive information about which services are being accessed and by whom to get full visibility into shadow IT.
| Finding | Severity |
|---|---|
| App Not Certified By Microsoft | Low |
| App Not Attested By Published | Low |
| App Disabled By Microsoft | Low |
Email administrator settings
Discover suspicious or insecure email configurations in your Microsoft domain. Missing SPF and DMARC records make it easier for bad actors to spoof email, while SPF records configured to another domain can be a potential warning sign of malicious activity.
| Finding | Severity |
|---|---|
| Microsoft Domain SPF Record Allows Any IP Address | High |
| Microsoft Domain SPF Record Not Present | Medium |
| Microsoft Domain DMARC Record Not Present | Medium |
| Microsoft Domain DMARC Not Enforced | Medium |
| Microsoft Domain DMARC Not Enforced for Subdomains | Medium |
| Microsoft Domain DMARC Only Partially Enforced | Medium |
| Microsoft Domain Not Verified | Medium |
| App Certification Expires in 90 Days or Sooner | Low |
Email forwarding
Get alerted when users set their email to be forwarded externally. This can either be a sign of unauthorized activity, or an employee unknowingly sending potentially sensitive information to a personal email.
| Finding | Severity |
|---|---|
| Active Message Rule Forwards Externally As Attachment | Low |
| Active Message Rule Forwards Externally | Low |
| Active Message Rule Redirects Externally | Low |
Microsoft Information Protection (MIP) sensitivity labels
Microsoft provides MIP sensitivity labels to classify and protect sensitive data. When you add the CASB Microsoft 365 integration, Cloudflare will automatically retrieve the labels from your Microsoft account and populate them in a DLP Profile.