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 Certified Web Application Defender (GWEB) certification validates your ability to secure web applications against the most common and dangerous vulnerabilities. It is designed for developers, security analysts, and architects who need hands-on skills to detect and prevent input validation flaws, cross-site scripting, SQL injection, and more. Earning GWEB proves you can implement effective defenses and protect your organization's web assets.
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 Certified Web Application Defender (GWEB) certification validates a practitioner's expertise in handling the common web application errors that lead to most security problems. GWEB certification holders have hands-on experience using current tools to detect and prevent input validation flaws, cross-site scripting (XSS), and SQL injection, and possess in-depth understanding of the weaknesses and best defenses for authentication, access control, and session management.
This certification goes beyond theoretical knowledge, emphasizing practical skills that can be applied immediately. It covers a broad range of topics including access control, AJAX technologies, cross-origin policy attacks, CSRF, encryption, file upload security, and modern application framework issues. By earning GWEB, you demonstrate your ability to recognize vulnerabilities and implement robust defenses, making you a valuable asset to any security team.
The GWEB certification is for application developers, application security analysts or managers, application architects, and penetration testers interested in learning about defensive strategies. It is also valuable for security professionals interested in web application security, auditors who need to understand defensive mechanisms, and employees of PCI-compliant organizations needing to comply with PCI requirements. If you are responsible for building, securing, or assessing web applications, GWEB provides the essential knowledge and skills to defend against common attacks and protect sensitive data.
Practical work experience in web application development or security is recommended, along with training or self-paced study. Hands-on experience with web application development or security testing; Familiarity with common web vulnerabilities and mitigation techniques; Understanding of HTTP, web architecture, and authentication mechanisms
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 Certified Web Application Defender
GIAC certifications must be renewed every four years by earning 36 CPE credits or 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 worksGWEB is a Practitioner certification that can be combined with other GIAC certifications to earn portfolio credentials like the GIAC Security Professional (GSP) or GIAC Security Expert (GSE).
The GWEB exam is a proctored, multiple-choice exam. It does not include a hands-on lab component like some other GIAC certifications.
GIAC exams are web-based and proctored. You can choose remote proctoring through ProctorU or onsite proctoring through PearsonVUE.
GIAC's retake policy allows you to retake the exam after a waiting period. Specific waiting periods are detailed in your GIAC account.
GWEB is designed for application developers, application security analysts, application architects, penetration testers, and security professionals focused on web application security.
Yes, you can renew your GWEB certification by retaking the GWEB exam or by earning 36 CPE credits. Passing a different GIAC exam may also earn CPE credits toward renewal.
GIAC exams are available globally through remote proctoring and onsite proctoring at PearsonVUE test centers.
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.
49 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 — 15 objectives, 121 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.