You can see it againUnder pressure people bring back shapes and positions long after the wording has gone.
Picture superiority · Shepard 1967, Standing 1973
The GIAC Penetration Tester (GPEN) certification validates your ability to conduct professional penetration tests using effective techniques and methodologies. It is designed for security professionals who assess networks and systems, including penetration testers, ethical hackers, and red team members. Earning GPEN proves you can perform detailed reconnaissance, execute exploits, and deliver rigorous, actionable reporting.
Content last reviewed 30 July 2026 · Up to date
What this certification covers, who it is written for, and what the exam itself looks like on the day.
What it validates, who it is written for, and the experience it assumes.
The GIAC Penetration Tester (GPEN) certification validates a practitioner's ability to properly conduct a penetration test employing effective techniques and methodologies. GPEN certification holders have the knowledge and skills to conduct exploits, engage in detailed environmental reconnaissance, and apply a process-oriented approach to penetration testing projects.
The exam covers comprehensive penetration test planning, scoping, and reconnaissance; in-depth scanning and exploitation, post-exploitation, and pivoting; Azure overview, integration, and attacks; and in-depth password attacks. GPEN is a hands-on, performance-based certification delivered through GIAC's CyberLive format, which uses realistic lab environments to validate real-world capability.
The GPEN certification is for security personnel responsible for assessing network and systems, including penetration testers, ethical hackers, red team members, and blue team members. It is also valuable for defenders, auditors, and forensic specialists who want to better understand offensive tactics. Candidates typically have hands-on experience with network scanning, exploitation tools, and penetration testing methodologies, and are comfortable working in Linux and Windows environments.
Practical work experience in penetration testing or related security roles is recommended to ensure mastery of the skills necessary for certification. Hands-on experience with network scanning and exploitation tools; Understanding of penetration testing methodologies and reporting; Familiarity with password attacks and Azure security concepts; Experience with command-line interfaces and virtual machines
Every domain and objective GIAC (SANS) measures, with the weight they carry on the exam.
The official GIAC (SANS) exam outline · checked 30 July 2026 · See the source
Everything GIAC (SANS) publishes about sitting it, and nothing we inferred.
No mandatory prerequisites — this certification has no required predecessor exam or credential.
The path GIAC (SANS) lays out, how the credential is kept, and where to book.
Step-by-step path to GIAC Penetration Tester (GPEN)
GIAC certifications must be renewed every four years by earning 36 Continuing Professional Education (CPE) credits or by retaking the exam. Stay current with the latest technologies and maintain your certification.
Learn more about renewal requirementsThis certification is currently active and available. GIAC (SANS) maintains this certification to validate current skills and industry relevance.
Register for the exam through GIAC, GIAC (SANS)’s authorized testing partner.
Schedule your examVisit the official GIAC (SANS) certification page for exam policies and requirements.
View the official pageYour coach in the app reads what you have answered with the book closed and tells you one thing to do tonight. It will not count an answer you gave with the page open, and it will tell you when you are not ready.
See how the coach worksGX-PT is a higher-level, Applied Knowledge certification for seasoned penetration testers. GPEN is a Practitioner-level certification that validates core penetration testing skills. Earning GPEN can be a stepping stone toward GX-PT, but GX-PT is not a successor that automatically renews GPEN.
Yes. The GPEN exam uses GIAC's CyberLive format, which replaces traditional multiple-choice testing with performance-based challenges in realistic lab environments. You work with virtual machines, real security tools, and authentic code to demonstrate your skills.
GIAC allows candidates to retake the exam after a waiting period. Specific retake policies, including waiting periods between attempts, are detailed in the GIAC terms and conditions. Check your GIAC account for the exact policy that applies to your attempt.
Yes. After your certification attempt is activated in your GIAC account, you can schedule your proctored exam through the GIAC portal. Rescheduling and cancellation policies are governed by GIAC's terms and the proctoring provider (ProctorU or PearsonVUE).
GPEN is designed for security personnel responsible for assessing networks and systems, including penetration testers, ethical hackers, red team members, blue team members, and defenders, auditors, and forensic specialists who want to better understand offensive tactics.
Yes. GIAC allows CPE credits for earning ISO-17024-accredited certifications (such as CISSP, CCNP, CEH, Security+) and other approved activities. You can submit these credits through your GIAC dashboard for renewal.
GIAC exams are available worldwide through remote proctoring via ProctorU and onsite proctoring via PearsonVUE. Regional availability may vary, and candidates should check the GIAC website for the latest delivery options in their area.
Every domain, every objective, and every concept GIAC (SANS) measures — each one written out.





Every objective below is a page you can open and practise now, without an account.
The official GIAC (SANS) exam outline · checked 30 July 2026 · See the source
In front of every objective the practice pages are already there, free and without an account. This is one objective, opened.
32 questions on this objective, five to a page. Every range above is a real page, open now, with no account.
The curriculum tells you what is on the exam. Proving you know it is a different job — and it is the one the closed-book run does.
The whole bank is open. 5 questions to a page, every answer explained, and a discussion thread on each one.
Every objective, and every page range, is a link — so you can pick up exactly where you left off.
Short enough to finish, long enough to matter.
Not only which one is right — why the others are wrong.
Ask, answer, and vote. Every question has its own thread.
These are not trivia. Each one is written against a concept in the book, so when you get one wrong there is somewhere to go and find out why.

The pages shown here come from our AI-900 book — an example of how each concept is written in plain language and, where the idea needs one, drawn as a full page you can take in at a glance.





Three reasons, and each one is a real finding rather than a slogan.
You can see it againUnder pressure people bring back shapes and positions long after the wording has gone.
Picture superiority · Shepard 1967, Standing 1973
The whole idea at onceWhere it starts, what happens in the middle, what comes out, and the mistake to avoid.
Multimedia principle · Mayer
The look-alikes sit togetherThe pairs the exam tests are drawn side by side, so the difference is seen, not told.
Dual coding · PaivioYou are never asked to read a poster here — only to see how one is built. After that, every other page is legible at a glance.

The idea as a sequence, followed with a finger before a word is read.
What it is, how the machine learns it, when it is the right tool.
The distinction the exam tests, given its own box instead of buried in prose.
The sentence to carry into the exam room.
This is the part that teaches. The illustration and the written explanation stay where they are while you work, so a scenario stops being a memory test and becomes something you can simply look at.
A smartphone uses AI to unlock when the owner looks at the camera. Which AI capability is being used?

The same questions come back with the book closed — that run is the one that counts. After it, your coach picks one thing for tonight, sized to the time you have, and brings pages back before you lose them.
Testing effect · Roediger & Karpicke 2006 · spacing effect · Cepeda et al. 2006
Where the exam is defined, scheduled and scored.
We link to them rather than repeat them, so nothing here goes stale behind them.
We build from the official skills outline, not from a summary of it — 16 objectives, 145 concepts written under them, and free questions against every one. When GIAC (SANS) changes the outline, this page changes with it.
That is the only question worth answering the night before, and no link answers it. You answer it by taking the questions with the book closed, and seeing what comes back.