Quick Answer
The answer is Burp Suite Intruder, the correct tool for automatically fuzzing web application inputs to identify common vulnerabilities like SQL injection and cross-site scripting. Intruder works by taking a base request, marking payload positions within parameters, and systematically substituting those positions with a wordlist of attack strings, allowing testers to observe how the application responds to unexpected or malicious input. On the Certified Ethical Hacker CEH exam, this question tests your understanding of Burp Suite’s modular toolkit, often appearing alongside distractors like Repeater (which manually resends single requests) or Decoder (which handles encoding). A common trap is confusing Intruder’s automated fuzzing with Repeater’s manual manipulation, but remember: Intruder is for brute-force, fuzzing, and enumeration at scale. To lock it in, think of the mnemonic “Intruder Injects” — it injects payloads automatically to uncover injection flaws.
This CEH practice question tests your understanding of web application and injection attacks. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which of the following Burp Suite tools is used to automatically fuzz web application inputs and identify common vulnerabilities like SQL injection and XSS?
Proxy
Why wrong: Proxy is for intercepting traffic, not automated fuzzing.
Repeater
Why wrong: Repeater is for manually resending and modifying requests.
Intruder
Intruder allows automated fuzzing with payloads.
Scanner
Why wrong: Scanner is for automated vulnerability scanning but not typically used for manual fuzzing.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Intruder
Burp Intruder is a tool for automating customized attacks against web applications, including fuzzing for vulnerabilities.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Proxy
Why it's wrong here
Proxy is for intercepting traffic, not automated fuzzing.
Repeater
Why it's wrong here
Repeater is for manually resending and modifying requests.
Intruder
Why this is correct
Intruder allows automated fuzzing with payloads.
Related concept
Read the scenario before looking for a memorised answer.
Scanner
Why it's wrong here
Scanner is for automated vulnerability scanning but not typically used for manual fuzzing.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CEH 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.
What to study next
Identify which CEH exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Web Application and Injection Attacks — study guide chapter
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FAQ
Web Application and Injection Attacks — This question tests Web Application and Injection Attacks — Read the scenario before looking for a memorised answer..
The correct answer is: Intruder — Burp Intruder is a tool for automating customized attacks against web applications, including fuzzing for vulnerabilities.
Identify which CEH exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A pentester uses Burp Suite's Intruder to perform a brute-force attack on a login form. Which THREE of the following Intruder attack types would be appropriate for testing different payload combinations?
hardWhy B: Sniper uses one payload set and iterates over positions sequentially. Battering ram uses one payload set for all positions simultaneously. Pitchfork uses multiple payload sets in parallel but each set must have the same number of payloads. Cluster bomb uses multiple payload sets and tries all combinations.
Variation 2. A penetration tester uses Burp Suite to intercept and modify web traffic. Which TWO features in Burp Suite would be MOST useful for performing a brute-force attack on a login form? (Choose TWO.)
mediumWhy B: Intruder is designed for automated brute-forcing with payloads. Proxy allows interception and manipulation of requests before sending to Intruder. Repeater is for manual requests, not automated attacks. Scanner is for vulnerability scanning, not brute-forcing.
Last reviewed: Jun 21, 2026
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