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Ethical Hacker Skills Test: How to Assess Penetration Testers Before You Hire

joseph cole

Updated on December 2, 2022

Ethical Hacker Skills Test: How to Assess Penetration Testers Before You Hire

joseph cole

Updated on December 2, 2022

In this post

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An ethical hacker skills test checks whether a candidate can find, exploit and clearly report security weaknesses in systems they’re authorized to test. A strong test combines security fundamentals, hands on tasks such as web application and network challenges, and a written findings report. Glider AI’s Technical Assessments let you build this for entry level through senior roles.

Security hiring carries a particular risk. You’re giving someone deep access to your systems, so you need to trust both their skill and their integrity. Certifications help, but they don’t show how a candidate approaches an unfamiliar target, how carefully they stay in scope, or whether their report would make sense to the engineers who have to fix the issue.

What an ethical hacker does

Ethical hackers, often called penetration testers, are hired to attack systems with permission so organizations can fix weaknesses before criminals find them. Typical work includes:

  • Reconnaissance and mapping of the target’s attack surface
  • Vulnerability scanning and manual verification
  • Exploiting web application, network and cloud weaknesses
  • Privilege escalation and lateral movement within scope
  • Writing clear reports with risk ratings and remediation steps
  • Retesting fixes and advising engineering teams

Skills an ethical hacker skills test should cover

Skill areaWhat to testExample task
NetworkingTCP/IP, ports and services, firewalls, traffic analysisIdentify exposed services from a scan output
Web application securityOWASP Top 10, authentication flaws, injection, access controlFind and explain a vulnerability in a sample app
Operating systemsLinux and Windows internals, permissions, privilege escalationSpot the misconfiguration that allows escalation
ScriptingPython or Bash for automation and custom checksWrite a short script to parse results
CryptographyHashing, encryption, common implementation mistakesExplain why a password storage approach is weak
ReportingClear findings, severity, remediationWrite a finding for a nontechnical audience
Ethics and scopeRules of engagement, legal boundariesRespond to an out of scope discovery scenario

Match the test to the level

Entry level and junior roles

Focus on fundamentals: networking, Linux, common web vulnerabilities and basic scripting. A 20 to 30 minute test with multiple choice questions plus one short practical task is enough to separate candidates who have practiced from those who’ve only read about security.

Mid level penetration testers

Add hands on challenges, such as a vulnerable web application or a set of logs to analyze, and require a short written finding. Score both the technical result and the clarity of the report.

Senior and lead roles

Include scenario questions about scoping an engagement, prioritizing findings across a large environment, and explaining risk to executives. Senior candidates should show judgment, not just exploitation skill.

How to structure an ethical hacker skills test

  1. Fundamentals section: 10 to 15 minutes of multiple choice and scenario questions on networking, operating systems and web security.
  2. Practical challenge: a contained, hands on task in a safe environment.
  3. Reporting task: a short written finding with severity and remediation.
  4. Ethics scenario: an open ended question about scope and responsible disclosure.

Score each section against a rubric agreed with your security lead, and weight reporting and ethics as seriously as the technical result.

Red flags in security candidates

  • Can’t explain how a vulnerability works, only that a scanner found it
  • Ignores scope or rules of engagement in scenario answers
  • Writes findings with no remediation guidance
  • Overstates severity to sound impressive
  • Can’t describe a test they’ve done end to end

How Glider AI supports security hiring

Glider AI’s Technical Assessments cover 250+ technologies, so you can combine security, networking, Linux, scripting and cloud questions in one test that matches your team’s work. Hands on tasks show how a candidate actually works, and open ended answers such as written findings are scored against a rubric with a human override.

For security roles, integrity is part of the skill. AI Proctoring records tab switching, copy and paste, and face detection events for recruiter review, and questions are watermarked per candidate. ID Verify confirms the person who takes the test is the person who joins your team. Teams hiring security engineers at scale can see how this fits an enterprise hiring process, and engineering leaders can pair it with CI/CD skills checks for DevSecOps roles.

Frequently asked questions

What skills should an ethical hacker have?

An ethical hacker should understand networking, Linux and Windows internals, web application security including the OWASP Top 10, scripting in Python or Bash, cryptography basics, and privilege escalation. Just as important are clear report writing and strict respect for scope and legal boundaries.

How do you test ethical hacking skills before hiring?

Combine a fundamentals section with a hands on challenge in a safe environment, a written findings report and an ethics scenario. Score each part against a rubric set with your security lead, and proctor the session so results reflect the candidate’s own work.

What is the difference between an ethical hacker and a penetration tester?

The terms overlap heavily. Penetration tester usually describes the job of running authorized security tests and reporting findings. Ethical hacker is a broader term for anyone using attack techniques with permission, including red team members and bug bounty researchers.

Are certifications enough to hire an ethical hacker?

No. Certifications like CEH or OSCP show a candidate studied and passed an exam, and some are hands on. They don’t show how the candidate handles your environment, stays in scope or writes reports. Use certifications as a filter and a skills test as evidence.

How long should an ethical hacker skills test take?

Entry level tests can run 20 to 30 minutes. Mid level and senior assessments with practical challenges and reporting usually take 45 to 90 minutes. Keep each section focused so experienced candidates complete the test.

How do you make sure a remote security test is honest?

Use proctoring that records tab switching, copy and paste, and face detection, watermark questions per candidate, and verify identity before and after the test. Review flags with the session timeline rather than rejecting automatically.

Hire security talent you can trust

The person you hire will hold the keys to your systems. Build a role specific ethical hacker skills test with Glider AI’s Technical Assessments and verify both skill and identity before you make an offer.

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