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Free, browser-based security challenges
Practice hacking realistic web applications — right here, right now. No downloads, no virtual machines, no credit card. Just pick a lab and start exploiting.
Browse LabsFollow a guided sequence of labs to build expertise in a specific area.
Most hands-on security platforms charge $15–50/month, require complex local setups, or hide the best content behind paywalls. If you're a student, self-taught developer, or career-switcher, that's a real barrier. We built TarantuLabs to remove it.
Every lab runs entirely in your browser. No Docker, no VMs, no CLI tools to install. Click "Start" and you're in.
SQL injection, XSS, broken authentication, IDOR, command injection — the same flaws found in real-world applications, built into purpose-made apps you can safely exploit.
Clear objectives, progressive hints when you're stuck, and instant flag verification. Every lab is designed to teach, not to gatekeep.
No subscriptions, no freemium tiers, no "sign up to continue." Every lab is available to everyone, always. We believe security education is too important to paywall.
Anyone learning web security — whether you're a computer science student preparing for your first security role, a developer who wants to understand the attacks your code needs to withstand, or a hobbyist who discovered CTFs last week and wants to sharpen your skills without spending $40/month on a platform subscription.
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