CPENT Cloud And Hybrid Infrastructure Security Practice Question
During an assessment of a Google Cloud Platform project, a penetration tester finds that a Cloud Storage bucket has the allUsers principal granted the Storage Object Viewer role. What security flaw does this represent, and how should it be fixed?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The bucket is public; the allUsers or allAuthenticatedUsers IAM binding must be removed to secure the data.
Granting allUsers IAM role bindings on a Cloud Storage bucket makes its objects publicly readable over the internet. Remediation requires removing the allUsers binding.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The bucket is vulnerable to GCP IAM privilege escalation via service account impersonation.
Why it's wrong here
Public read access is not service account impersonation.
- ✗
Google Cloud Armor automatically deletes the bucket objects.
Why it's wrong here
Cloud Armor protects HTTP load balancers, not GCS storage directly.
- ✓
The bucket is public; the allUsers or allAuthenticatedUsers IAM binding must be removed to secure the data.
Why this is correct
allUsers binding grants public access to Cloud Storage buckets.
- ✗
Compute Engine instances can no longer mount the bucket as a persistent disk.
Why it's wrong here
GCS buckets are mounted via gcsfuse, not as persistent block disks.
About these practice questions
This CPENT question is part of Courseiva's 274-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This CPENT practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CPENT exam.