They should revoke the app’s delegated scopes and remove the trust relationship, not only disable the user account. The key question is whether the AI app can still access workspace data through an existing grant. If yes, the offboarding process is incomplete and the exposure remains.
What changes when an AI bridge is no longer approved?
The revocation problem is not just about the person who connected the app. A delegated AI bridge can keep acting through the grant it already holds, so the real control point is the app’s access path and trust relationship. If that delegation stays live, disabling the user account alone may leave workspace data reachable.
That is why offboarding has to be judged by effective access, not by whether the original user can still sign in.
How to revoke delegated AI access cleanly
Start by identifying every scope, consent, token, and connector that lets the AI app act on the workspace’s behalf. Then remove the delegated permissions, invalidate the trust relationship, and confirm that the app cannot refresh or re-establish access through a surviving grant.
Where the bridge uses OAuth-style delegated access, the practical question is whether the authorization still exists at the platform level. A disabled user account may stop interactive use, but it does not necessarily terminate a previously issued app grant or a service-to-service path that can continue until the consent or credential is revoked.
In strong offboarding, the control objective is to remove the app’s authority to reach data, not merely to stop one login route. That means checking connected apps, enterprise app assignments, delegated scopes, refresh capability, and any secondary trust link that could re-open access after the user account is disabled.
What good revocation looks like in practice
Good revocation ends in a verifiable no-access state. The app should no longer be able to read mailbox, chat, file, or workspace content; it should not be able to refresh tokens; and it should not retain any remaining approval that can be used to rehydrate access later.
A complete teardown usually needs coordination across identity administration, the SaaS admin plane, and the application owner. If the bridge was approved for a business workflow, document who approved it, who removed it, and what evidence shows the grant is gone. If the platform does not provide clear revocation visibility, treat that as a control gap rather than assuming deactivation was enough.
Risk and Threat Considerations
The main risk is residual authority. A delegated AI bridge can continue to access sensitive workspace data after the approving user leaves, changes role, or is disabled, because the grant may survive independently of the person account. That creates unnecessary exposure and can turn an offboarding event into a lingering data-access problem.
Failure mechanism: The organisation removes the user account or disables interactive use, but does not revoke the app’s delegated scopes, consent, or trust relationship. The bridge can still act through existing authorization and may keep accessing data until the grant expires or is explicitly removed.
Impact: Workspace content remains reachable through an approved app path, so the organisation retains invisible access risk, weaker containment after role change or termination, and a larger blast radius if the bridge is later misused or compromised.
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 OWASP Agentic AI Top 10 define the specific risk controls and attack patterns relevant to this topic.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 — Improper Offboarding | Revoking delegated AI access is an offboarding control problem. |
| NHI-04 — Insecure Authentication | Surviving delegated tokens or trust can keep an app authenticated after user disablement. | |
| NHI-05 — Overprivileged NHI | Delegated AI bridges can retain excessive workspace access if scopes are not removed. | |
| Recommendation — Revoke the app grant and trust relationship, then verify the bridge cannot regain access. Invalidate all surviving auth paths, including refresh-capable grants and tokens. Reduce scopes to the minimum and remove any unnecessary delegated permissions. | ||
| OWASP Agentic AI Top 10 | ASI03 — Identity & Privilege Abuse | A delegated AI bridge can continue using granted authority if revocation is incomplete. |
| Recommendation — Remove agent authority at the platform level and confirm the app cannot act on behalf of the user. | ||
Practitioner Guidance
What to verify: Confirm that revocation removes the app grant itself, not just the human account. If the platform shows the app as still consented, assigned, or able to refresh tokens, treat the offboarding as incomplete.
Decision rule: If the AI bridge can still reach data through an existing delegation, revoke the delegation first and validate the no-access state before relying on user deprovisioning as a closure signal.
Practitioner takeaway: For delegated AI access, the correct offboarding metric is “can the app still act?” not “can the user still log in?”