The answer is that the bucket is publicly accessible to read objects. This security concern arises because the S3 bucket policy uses a wildcard principal set to `"*"`, which grants any unauthenticated user or anonymous entity on the internet permission to perform the `s3:GetObject` action. Since the effect is `Allow` and no conditions restrict access, the policy effectively makes every object in the bucket readable by anyone who knows the bucket name and object key, exposing sensitive data without authentication. On the Computer Hacking Forensic Investigator CHFI exam, this scenario tests your understanding of misconfigured IAM policies as a common forensic finding in cloud data breaches; a frequent trap is assuming a wildcard principal only applies to authenticated AWS users, but it actually includes anonymous users. A useful memory tip: think of the wildcard `"*"` as a "star" that opens the door to the entire internet—if you see it in a principal field with an Allow effect, the bucket is wide open.
CHFI Network and Cloud Forensics Practice Question
This CHFI practice question tests your understanding of network and cloud forensics. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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 publicly accessible to read objects
Option C is correct because the IAM policy's `Principal` is set to `"*"` (wildcard), which means any unauthenticated user or anonymous entity on the internet can perform the `s3:GetObject` action. This makes the S3 bucket publicly readable, exposing all objects stored in the bucket to anyone who knows the bucket name and object key. The `Effect` is `Allow` and there is no condition restricting access, so the policy grants open read access to the entire bucket.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 resource does not include all objects
Why it's wrong here
The /* at the end includes all objects.
✗
The policy version is outdated
Why it's wrong here
Version 2012-10-17 is current.
✓
The bucket is publicly accessible to read objects
Why this is correct
Principal: * allows any user to perform GetObject.
Related concept
Read the scenario before looking for a memorised answer.
✗
The policy allows anyone to write objects to the bucket
Why it's wrong here
Action is GetObject, not PutObject.
Common exam traps
Common exam trap: answer the scenario, not the keyword
EC-Council often tests the distinction between a wildcard `Principal` (public access) and a wildcard `Resource` (which is normal for bucket policies), so candidates mistakenly think the `/*` in the Resource field is the security issue, when it is actually the `"*"` in the Principal field that creates the vulnerability.
Detailed technical explanation
How to think about this question
Under the hood, the `Principal: "*"` in a resource-based policy (like an S3 bucket policy) effectively grants access to all AWS accounts and anonymous users, bypassing any IAM user or role restrictions. In real-world scenarios, this misconfiguration has led to massive data breaches, such as the exposure of millions of customer records from misconfigured S3 buckets. AWS recommends using bucket policies with explicit conditions (e.g., `aws:SourceIp` or `aws:PrincipalOrgID`) or requiring authentication via `Principal: { "AWS": "arn:aws:iam::account-id:root" }` to avoid public access.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CHFI exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CHFI question in full detail.
Network and Cloud Forensics — This question tests Network and Cloud Forensics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The bucket is publicly accessible to read objects — Option C is correct because the IAM policy's `Principal` is set to `"*"` (wildcard), which means any unauthenticated user or anonymous entity on the internet can perform the `s3:GetObject` action. This makes the S3 bucket publicly readable, exposing all objects stored in the bucket to anyone who knows the bucket name and object key. The `Effect` is `Allow` and there is no condition restricting access, so the policy grants open read access to the entire bucket.
What should I do if I get this CHFI question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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