Skip to content

Penetration Testing Your Own App

Tools, methodology, and responsible practices for security testing your own applications

17 min readsecurity, penetration-testing, owasp-zap, burp-suite, responsible-disclosure

You've built your application. You've followed security best practices. You've set up CSP headers, audited your dependencies, and implemented proper authentication. How do you know if it's actually secure?

You test it. Not with unit tests that verify your code does what you intended. With penetration tests that verify your code resists what you didn't intend. Pen testing is the practice of attacking your own application — methodically, systematically, and before someone else does it for real.

This lesson covers the tools and methodology for testing your own applications. We're focused entirely on authorized testing of applications you own or have explicit permission to test. This is a defensive skill for builders, not an offensive skill for attackers.

The Pen Testing Mindset

Pen te

This lesson is part of the Guild Member curriculum. Plans start at $29/mo.