- A
Implement server-side authorization checks for every object request.
Server-side authorization ensures the application verifies that the current user is allowed to access the specific object requested. This directly stops insecure direct object reference issues because changing the identifier alone no longer grants access. The check must happen on the server for every request, not in the browser.
- B
Make the identifier longer so users cannot guess nearby values.
Why wrong: Longer identifiers may reduce guessing, but they do not fix the missing access control decision.
- C
Move the portal to HTTPS so request parameters cannot be intercepted.
Why wrong: HTTPS protects data in transit, but it does not stop an authenticated user from changing object IDs.
- D
Store the document name in a hidden field and validate it in JavaScript.
Why wrong: Client-side checks are easy to bypass and should not be trusted for authorization decisions.
Quick Answer
The answer is implementing server-side authorization checks for every object request. This is correct because the vulnerability, known as Insecure Direct Object Reference or IDOR, occurs when a server trusts user-supplied input—like a file ID in a URL—without verifying that the authenticated user has permission to access that specific resource. By enforcing server-side authorization on every request, the system validates the user’s identity and access rights against the requested object before serving it, directly blocking the tampered request. On the Security+ SY0-701 exam, this scenario tests your understanding of access control mechanisms and the principle of least privilege; a common trap is assuming client-side checks or obscuring IDs are sufficient. Remember the mnemonic “Verify Every Object” (VEO): always validate authorization server-side for each object, never trust the URL alone.
SY0-701 Threats, Vulnerabilities, and Mitigations Practice Question
This SY0-701 practice question tests your understanding of threats, vulnerabilities, and mitigations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A file-sharing portal uses a download URL like /download?file=12345. A tester changes the value to 12346 and can access another department's document without logging in again. Which control most directly prevents this issue?
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
Implement server-side authorization checks for every object request.
The issue is that the server trusts the file identifier in the URL without verifying that the authenticated user is authorized to access the requested resource. Implementing server-side authorization checks for every object request ensures that before serving any file, the server validates whether the current session or user has explicit permission to access that specific document. This directly prevents the IDOR (Insecure Direct Object Reference) vulnerability demonstrated by the tester.
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.
- ✓
Implement server-side authorization checks for every object request.
Why this is correct
Server-side authorization ensures the application verifies that the current user is allowed to access the specific object requested. This directly stops insecure direct object reference issues because changing the identifier alone no longer grants access. The check must happen on the server for every request, not in the browser.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Make the identifier longer so users cannot guess nearby values.
Why it's wrong here
Longer identifiers may reduce guessing, but they do not fix the missing access control decision.
- ✗
Move the portal to HTTPS so request parameters cannot be intercepted.
- ✗
Store the document name in a hidden field and validate it in JavaScript.
Why it's wrong here
Client-side checks are easy to bypass and should not be trusted for authorization decisions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse confidentiality controls (like HTTPS or longer identifiers) with authorization controls, failing to recognize that the core flaw is the lack of server-side permission verification for each object request.
Detailed technical explanation
How to think about this question
This is a classic Insecure Direct Object Reference (IDOR) vulnerability, often categorized under broken access control in the OWASP Top 10. Under the hood, the server likely uses a simple sequential integer as a file identifier and performs no access control list (ACL) check before streaming the file. In a real-world scenario, an attacker could automate parameter fuzzing to enumerate all valid file IDs, exfiltrating entire departments' documents if no server-side authorization is enforced.
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 security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Threats, Vulnerabilities, and Mitigations — This question tests Threats, Vulnerabilities, and Mitigations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement server-side authorization checks for every object request. — The issue is that the server trusts the file identifier in the URL without verifying that the authenticated user is authorized to access the requested resource. Implementing server-side authorization checks for every object request ensures that before serving any file, the server validates whether the current session or user has explicit permission to access that specific document. This directly prevents the IDOR (Insecure Direct Object Reference) vulnerability demonstrated by the tester.
What should I do if I get this SY0-701 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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Last reviewed: Jun 11, 2026
This SY0-701 practice question is part of Courseiva's free CompTIA 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 SY0-701 exam.
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