Interactive Security Lab
OWASP Top 10 Interactive Demo
Pick a vulnerability class, craft a malicious input, and watch a simulated backend react exactly the way a vulnerable one would — then see the same request hit a fixed implementation. Nothing here touches a real server or the network; every "request" runs against an in-memory mock, entirely in your browser.
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2 Your input
Quick-fill a payload:
Request sent to the (simulated) server
fixed
your input
How this vulnerability works
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How to prevent it
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Fixed version
This is a teaching tool. Every "server", "database" and "response" here is hard-coded JavaScript running in your own browser — no request is ever sent anywhere, and there is nothing real to exploit. Only ever test these techniques against systems you own or are explicitly authorized to assess.