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SQL Injection
Manipulate database queries to extract data, bypass authentication or escalate privileges. The most classic web hacking vulnerability.
Free
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No setup needed
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Global leaderboard
CTF: Capture The Flag.
Learn web hacking with real free challenges.
CTF (Capture The Flag) challenges are the most effective way to learn cybersecurity through real practice. Solve real web hacking challenges, capture flags and climb the global leaderboard. Free, no setup, starting today.
What is a CTF (Capture The Flag)?
The ethical hacker's gym
A CTF (Capture The Flag) is a cybersecurity competition where participants solve technical challenges to obtain a flag: a secret string proving they found and exploited the vulnerability. They are the hacker's equivalent of the gym — real, legal and measurable practice.
Web hacking CTFs reproduce the most common vulnerabilities in real applications — SQL Injection, XSS, IDOR, SSRF — in controlled environments built specifically for practice. No infrastructure to set up, no legal risk: each challenge is a vulnerable application ready to attack.
At SixHack Academy our CTF Labs focus on web hacking with real methodology. Difficulty levels, global leaderboard and fully free access. The most direct way to see whether offensive cybersecurity is for you before enrolling in a course.
Challenge types
What vulnerabilities will you find in the CTF?
The challenges covered on the SixHack Academy CTF platform.
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Cross-Site Scripting (XSS)
Inject scripts into web applications to steal sessions, redirect users or perform actions on their behalf. Reflected, stored and DOM-based.
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IDOR
Access other users' resources by manipulating direct identifiers in HTTP requests. One of the most frequent flaws in real applications.
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SSRF
Force the server to make internal requests or reach services that shouldn't be accessible from outside. Very common in cloud environments.
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Path Traversal
Access files outside the intended directory using relative path sequences. Can compromise server configuration files.
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Malicious file uploads
Upload files the server executes or processes insecurely to achieve remote code execution. One of the most advanced challenges on the platform.
Why CTFs
Why do CTFs in cybersecurity?
The reasons CTFs are the most effective way to learn hacking.
Learn hacking through practice
Not theory — each CTF challenge is a real vulnerability you have to find, understand and exploit. Learning comes from doing, not watching.
Validate your skills objectively
The global CTF leaderboard is an honest metric of your level. More useful to recruiters than any theoretical certificate.
Prepare for real audits
Web hacking CTFs cover OWASP Top 10 — the same vulnerabilities you'll find in professional pentesting engagements.
Practice legally
Controlled environments built to be attacked. No legal risk, no harming real systems, no setup required.
Complement your course training
CTFs work as free practice between course modules — apply what you've learned in an environment without a safety net.
First Blood and real competition
Be the first to solve a challenge and claim First Blood. The leaderboard updates in real time against other hackers worldwide.
From CTFs to full training
CTFs are the perfect entry point before enrolling in a course. They let you experience the real methodology, identify your technical gaps and decide where to start. Once you know what you're missing, the SixHack Academy course path covers everything from scratch to advanced: ethical hacking, web pentesting and mobile pentesting.
FAQ
Frequently asked questions about CTF
The most common questions before starting with hacking challenges.
What is a CTF (Capture The Flag)?
A CTF is a cybersecurity competition where you solve technical challenges to get a flag:
a secret string proving you exploited the vulnerability. They are the most effective way
to learn hacking in a legal and controlled environment.
What is CTF useful for?
CTFs let you practice real hacking techniques legally: SQL Injection, XSS, IDOR, SSRF and more.
Used by students to learn, professionals to stay sharp and recruiters to evaluate real skills objectively.
How do I start with CTFs as a beginner?
Start with easy web hacking challenges: basic SQL Injection, reflected XSS and simple IDOR.
SixHack Academy's CTF Labs have beginner levels and hints so you don't get stuck.
Sign up free — no credit card, no setup required.
What are SixHack Academy's CTF Labs?
A free online CTF platform focused on web hacking with OWASP Top 10 vulnerabilities.
Three difficulty levels, a real-time global leaderboard and First Blood for each challenge.
Free access after signup, no credit card required.
Start with CTF Labs now
Free, no setup. Real web hacking challenges with a global leaderboard.
Where to go next
CTFs are the training ground, but they're part of something bigger. Our hacking labs expand the practice with more scenarios; web hacking gives you the theory behind many of the challenges; and if you want to make the professional leap, our hacking academy structures everything into a real path.