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Ethical Hacker (Penetration Tester) interview questionsPenetration Testing Exercise round

A 60 min interview plan with a time-boxed script, what each question is for, and the signals to score against. Key skills: Penetration Testing, Problem Solving, Exploit Development, Scripting, Analytical Thinking.

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Introduction

5 min
•

Hi, I’m [YOUR_NAME], and I’m a [YOUR_TITLE] at [COMPANY_NAME]. I’m excited to see your skills in action today.

•

Could you briefly introduce yourself and share what attracted you to apply for this position?

What this question is for, and what to listen for

Purpose

Assess communication skills, alignment with the role, and initial confidence.

Signals to score

  • Clear introduction provided
  • Relevant experience mentioned
  • Motivations for applying explained
  • Alignment with team values
  • Specific skills highlighted
  • Response is concise and organized
  • Understanding of role requirements

Follow-up questions

  • What excites you most about this position?
  • How does your background align with our team’s work?
•

Great, thank you for sharing! In the next 50 minutes, we’ll dive into a penetration testing exercise.

Penetration Testing Challenge

50 min
•

You have been given access to a web application. Your task is to identify and exploit a vulnerability that allows unauthorized data access. Please describe your approach and demonstrate your findings.

What this question is for, and what to listen for

Purpose

Assess penetration testing, problem-solving, exploit development, scripting, and analytical thinking skills.

Signals to score

  • Identifies potential vulnerabilities
  • Uses methodical approach
  • Demonstrates understanding of web application security
  • Explains thought process clearly
  • Provides a working exploit
  • Considers ethical implications
  • Tests and validates findings
  • Open to feedback and adjusts accordingly

Follow-up questions

  • What steps would you take to identify vulnerabilities?
  • Can you explain how you would exploit this vulnerability?
  • How would you ensure your actions are ethical?
  • What tools would you use in this scenario?
•

If you had more time, what would you change in your solution?

What this question is for, and what to listen for

Purpose

Assess the candidate's ability to reflect on their work, identify areas for improvement, and demonstrate critical thinking and problem-solving skills.

Signals to score

  • Recognizes limits in their original answer.
  • Points out clear areas to improve.
  • Suggests specific changes.
  • Talks about how changes could help performance.
  • Shares ideas clearly and logically.
  • Shows a desire to learn and improve.

Follow-up questions

  • What additional tools or techniques could you use?
  • How would you improve the efficiency of your approach?
  • Are there any edge cases you would address?
•

Great job on the penetration testing exercise!

Closing

5 min
•

Do you have any questions for me about the team or the company?

What this question is for, and what to listen for

Purpose

Gauge the candidate’s curiosity and interest in the role.

Signals to score

  • Thoughtful questions asked
  • Interest in company culture
  • Curiosity about growth expressed
  • Questions about role raised
  • Inquiries about team challenges
  • Engagement with responses shown
  • Desire to learn next steps
  • Focus on company values expressed

Follow-up questions

  • What interests you most about this team?
  • Are there any areas of the role you’d like to explore further?
•

Thank you for your time today. We’ll be in touch soon regarding the next steps.

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Interview Template
Position
Ethical Hacker (Penetration Tester)
Round
Penetration Testing Exercise for 60 min
Key skills
Penetration Testing, Problem Solving, Exploit Development, Scripting, Analytical Thinking

Ethical Hacker (Penetration Tester) interviews — common questions

Who is this Ethical Hacker (Penetration Tester) interview plan for?
It is written for the interviewer, not the candidate: the hiring manager, engineer or panel member running the Penetration Testing Exercise round for a Ethical Hacker (Penetration Tester) role. It gives you a 60 min script to follow in the conversation — 4 questions with what each one is for and the signals to score against — so you are not writing the round from scratch the night before.
What does the Penetration Testing Exercise round assess?
This round is focused on: Penetration Testing, Problem Solving, Exploit Development, Scripting, Analytical Thinking. It works through Introduction, Penetration Testing Challenge and Closing, scoring against 29 observable signals, with follow-up prompts on all 4 questions for going deeper where an answer is thin.
How is the 60 min split up?
Introduction (5 min), Penetration Testing Challenge (50 min), Closing (5 min). The timings are there so the round stays on schedule and every candidate gets the same shape of interview — which is what makes two candidates comparable afterwards.
What other rounds should I run for a Ethical Hacker (Penetration Tester)?

A single round does not cover a whole role. The other rounds in this library for a Ethical Hacker (Penetration Tester):