Because every connected app adds another entitlement path that can outlive the original approval. The risk is not only sprawl, but also hidden delegation, orphaned access, and weak offboarding. Without usage telemetry and ownership mapping, security teams cannot tell whether an integration is still justified or simply still active.
Why This Matters for Security Teams
App-store integrations look like a simple productivity choice, but they expand the SaaS trust boundary every time an admin clicks approve. Each connection can create OAuth grants, API tokens, service accounts, and delegated scopes that persist long after the original business need changes. That is why app governance is now an identity problem as much as a software inventory problem. NHI Management Group’s The State of Non-Human Identity Security found that 85% of organisations lack full visibility into third-party vendors connected via OAuth apps, which is exactly the kind of blind spot app stores introduce.
Security teams often focus on whether an app was reviewed at intake, but the harder question is whether that integration is still justified, still active, and still correctly scoped. App-store ecosystems also obscure ownership because the approver, the day-to-day user, and the system holding the credential are rarely the same. Current guidance from the NIST Cybersecurity Framework 2.0 pushes organisations toward asset visibility and continuous governance, not one-time approval. In practice, many security teams discover app-store overreach only after a data-sharing incident or an offboarding gap has already exposed the tenant.
How It Works in Practice
App-store integrations increase governance risk because they convert a visible software choice into a chain of hidden authorisations. A single installation can grant read, write, offline access, or admin-level scope across mail, files, chats, calendars, or CRM records. If the integration is approved once and then forgotten, the SaaS tenant accumulates standing privilege that is hard to audit and even harder to revoke cleanly. This is why Top 10 NHI Issues treats lifecycle control, secret hygiene, and ownership clarity as core governance requirements.
Effective control usually requires four linked practices:
- Map every app to a business owner, technical owner, and data domain.
- Classify scopes by sensitivity, not just by vendor name or app category.
- Review usage telemetry so dormant integrations can be removed before they become orphaned access.
- Rotate or reissue secrets and tokens on a defined schedule, especially when the app can access high-value data.
For identity and access operations, the practical model is to treat each app-store integration as a non-human identity with a lifecycle, not as a convenience plugin. That means onboarding review, scope minimisation, periodic recertification, and offboarding that actually revokes the grant rather than only disabling the visible UI entry. Guidance in the Ultimate Guide to NHIs — Lifecycle Processes for Managing NHIs aligns with this approach, while NIST CSF 2.0 reinforces ongoing governance and monitoring expectations. These controls tend to break down in high-change SaaS environments where business users can self-install apps faster than security teams can review scopes and revoke stale grants.
Common Variations and Edge Cases
Tighter app governance often increases operational friction, so organisations have to balance speed of adoption against the cost of continuous review. That tradeoff is especially visible in departments that rely on rapid SaaS experimentation, where every new integration can support a legitimate workflow but also widen the attack surface.
Best practice is evolving for marketplace apps that use short-lived tokens versus legacy integrations that rely on persistent API keys. The former may reduce credential exposure, but they still create delegated access paths that can be abused if scope is excessive or offboarding is weak. There is no universal standard for this yet, so policy teams should distinguish between approved automation, user-installed productivity tools, and third-party vendors with broad data access. The Ultimate Guide to NHIs — Regulatory and Audit Perspectives is useful when app-store decisions need to be defensible to auditors.
Edge cases also appear when integrations are embedded into procurement, support, or finance workflows. In those environments, a single app may appear low risk until it is linked to sensitive records, cross-tenant exports, or admin delegation. The right control is not a blanket ban, but a governed approval path with explicit ownership, telemetry, and revocation criteria. For incident response context, the Salesloft OAuth token breach shows how a trusted integration can become an access vector when token hygiene and oversight are weak.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 and CSA MAESTRO address the attack and risk surface, while NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | App-store integrations are non-human identities that need lifecycle control. |
| NIST CSF 2.0 | PR.AC-4 | Third-party app access must be scoped and continuously governed. |
| CSA MAESTRO | GOV-3 | Agent and integration governance depends on ownership and policy enforcement. |
Review SaaS entitlements regularly and remove app access that no longer matches business need.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 12, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
