GROUP-001: External access to Google Groups restricted (GWS.GROUPS.1.1)
- Platform
- Google Workspace
- Category
- Collaboration
- Severity
- High
- Zero Trust pillar
- Data (weight 3)
- Golden fixtures
- 4
- Branch coverage
- Observed: fixtures prove the verdicts they exercise
- Provenance
- baseline
What it checks
SCuBA GWS.GROUPS.1.1 requires that Groups for Business sharing be limited so groups are not accessible to people outside the organization. When the group sharing collaboration capability is not set to domain-users-only, group content — which in a school can include student and staff data — becomes reachable by external parties. This check reads the groups_for_business.groups_sharing policy from the Cloud Identity Policy API and flags any organizational unit whose collaboration capability is not DOMAIN_USERS_ONLY.
Recommended value
Groups sharing collaboration capability set to DOMAIN_USERS_ONLY for all organizational units
Remediation
In the Google Admin console under Apps > Google Workspace > Groups for Business > Sharing settings, set group access to be limited to users in the organization (not 'Anyone on the internet'), so external parties cannot access group content.
Fixture-proven verdicts
Every verdict below is proven by a golden fixture in the module's gating test suite. This table derives from the last green run; it cannot be edited by hand.
| Scenario | Expected verdict |
|---|---|
| clean | PASS |
| known-bad | FAIL |
| no-policy | Not Assessed |
| not-assessed | Not Assessed |
Framework mappings
- CISA SCuBA
- GWS.GROUPS.1.1v1
- NIST SP 800-53
- AC-3, AC-22, SC-7