Security checks / Check reference / Service principals
Sp Service Principal Exchange App
Medium Severity Microsoft 365 security check in the Service principals domain.
Service principal has Exchange-related permissions (Mail, Calendar, Contacts). These apps may need Application Access Policies to restrict mailbox scope Exchange‐scoped application can access mail and calendar; BEC (Business Email Compromise) and data leakage become harder to detect Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.
Check summary
What this check verifies
Service principal has Exchange-related permissions (Mail, Calendar, Contacts). These apps may need Application Access Policies to restrict mailbox scope
Why it matters
Exchange‐scoped application can access mail and calendar; BEC (Business Email Compromise) and data leakage become harder to detect
How to fix it
Audit Exchange permissions; restrict to minimum required mailbox/calendar scopes
Siemserva flags every tenant where this check fails and, with Senserva Trustworthy AI remediation, can propose a validated fix you approve before it applies.
Ask your own AI about this check
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Compliance framework mappings
Findings from this check serve as evidence for:
References
Related Service principals checks
Common questions
What does the Sp Service Principal Exchange App check verify?
Service principal has Exchange-related permissions (Mail, Calendar, Contacts). These apps may need Application Access Policies to restrict mailbox scope It is a Medium Severity check in the Service principals domain, one of the 650+ checks Siemserva runs across Microsoft 365, Intune, Defender, and Entra ID.
How do I fix a Sp Service Principal Exchange App finding?
Audit Exchange permissions; restrict to minimum required mailbox/calendar scopes Siemserva ranks the finding by Severity and, with Senserva Trustworthy AI, can propose a validated, approve-before-apply configuration fix.
Which compliance frameworks does this check evidence?
Findings from this check map to SCuBA, MCSB, NIST, SOC2, CIS, HIPAA, including SCuBA policy MS.AAD.5.1v1, MS.AAD.5.2v1, MS.AAD.5.3v1, and MCSB controls AM-1, IM-3. That mapping is what turns a scan finding into audit evidence.
Can I ask my own AI about this check?
Yes. This page includes a free copy-paste AI prompt carrying the check's facts: what it verifies, the risk, the remediation, and the framework mappings. Paste it into Claude, ChatGPT, or Copilot; cite-worthy detail without giving an AI access to your tenant.
All 672 checks with severities and mappings: the Microsoft 365 security checks catalog.