GCS Bucket Does Not Enforce Public Access Prevention
Nothing stops someone making this bucket public, so a single permission change can expose everything in it.
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Google Cloud
Found, explained, handed over.
Where the estate departs from your policies, frameworks and tagging rules.
Detect
ZopNight checks this automatically across Google Cloud, with read-only access to the account.
Explain
Every finding says exactly what to change: Enforce Public Access Prevention on GCS bucket.
Fix
The finding opens with the fix already written out, step by step, so it is one ticket, not an investigation.
- Applies to
- GCS Buckets on Google Cloud
- The fix, by hand
- Cloud Storage → bucket the resource → Permissions → remove allUsers / allAuthenticatedUsers principals.
- Configuration → enable Uniform bucket-level access (so object ACLs can't re-expose).
- If the bucket hosts public assets, replace the public binding with Cloud CDN backing a signed-URL-only path.
- Re-scan with Cloud Asset Inventory / Security Command Center to confirm.
These are the steps the finding carries in the product.
- Category
- Compliance. Configuration drift from best practice: public access, missing MFA, unencrypted storage, deprecated runtimes.
- Where it appears
- The Compliance tab of Recommendations, with every affected resource listed.
- Rule ID
RC-138- Full reference
GCP Cloud Storage Bucket Does Not Enforce Public Access Prevention
Related checks
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