Connecting an AI assistant to mail, files, calendars, or customer systems can change a small experiment into a broad access decision. The useful question is not whether the app feels trustworthy. It is whether each requested permission is necessary for one named task, in one approved account, for a defined period—and whether the team can remove it cleanly.
1. Name the job before reading the permission screen
Write one sentence that describes the task and the minimum data needed to complete it. ‘Summarize three selected documents’ is testable; ‘help with the workspace’ is not. If the job is vague, the team cannot judge whether a permission is excessive.
NIST defines least privilege as restricting access to the minimum necessary for assigned tasks. Apply that principle to the connection itself: one owner, one approved account, one narrow dataset, and one review date.
- Named task
- Data owner
- Approved test account
- Minimum dataset
- Removal date
2. Translate permissions into verbs
Rewrite every scope as an action: view files, download files, create events, send mail, delete records, manage users. Separate reading from writing and writing from administration. A connector that can act on your behalf carries a different operational risk from one that can read a selected folder.
Do not infer limits from the button label. Open the detailed authorization screen and vendor documentation. Record what the account actually grants, including any access inherited through shared drives, group mailboxes, or administrator roles.
- Read
- Create
- Edit
- Send
- Delete or administer
3. Reduce scope before approving
Prefer a test workspace, a dedicated folder, a limited service account, or a small sample. Remove optional scopes and decline the connection if the product cannot complete the named job without broad access. CISA guidance reinforces least privilege so accounts receive only the permissions needed for their tasks.
Use synthetic or non-sensitive material for the first run. A successful demo proves that the workflow can execute; it does not prove that the app is appropriate for confidential, personal, regulated, or high-impact data.
- Test tenant or folder
- Non-sensitive sample
- No administrator role
- No unnecessary write access
- Human review of outputs
4. Save evidence, not impressions
Capture the app name, publisher, scopes, account, plan, approval owner, source links, and date. Keep vendor claims separate from controls observed in the actual account and from contractual assurances reviewed by the organization.
After the connection, test one harmless action and check the audit trail. Verify where the integration appears in the identity provider or account settings. Google, for example, provides a connections page where account holders can review and remove third-party access; other platforms use different menus.
- Publisher and app identity
- Exact scopes
- Plan and account
- Approval owner
- Evidence and review date
5. Revoke, verify, and review
Disconnecting inside the AI app may not revoke the identity-provider grant. Remove access from the authoritative account or administrator console, then confirm the app can no longer read or act. Rotate a token or credential if the integration used one and policy requires it.
Set a recurring review for active connections and remove dormant ones. Record the result: retained with reason, reduced, or revoked. This audit supports a decision; it does not certify a product or replace security, privacy, legal, procurement, or data-owner review.
- Revoke at the source
- Confirm access fails
- Rotate credentials when required
- Remove dormant apps
- Log the decision
Sources and limits
Primary standards and official account guidance reviewed 19 September 2026.
- NIST — Least Privilege glossary
- NIST SP 800-53 Rev. 5 — AC-6 Least Privilege
- Google Account Help — Manage connections between your Google Account and third parties
- CISA — Enhanced Visibility and Hardening Guidance
Editorial workflow guidance—not legal, security, privacy, or procurement advice.