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You’re Probably Missing Bugs Because You’re Guessing Instead of Testing 🧠

2 min readJul 1, 2025

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Hey Hackers 👾
Most people think they’re testing for bugs.
But what they’re really doing… is just checking for errors.
Let’s fix that. 👇

A 403 Isn’t the End — It’s the Beginning 🔐

See a 403 or 401 and move on?
Congrats, you just skipped the most interesting door in the house.

Try this instead:
– Remove the token completely
– Send a different user’s token
– Spoof X-Forwarded-For or Origin headers
– Mess with role=admin in body or cookies

Don’t trust what the app says. Test what it assumes.

Test the “Impossible” Stuff 😈

You know the requests that shouldn’t work?
Those are exactly the ones worth trying.

Things like:

– Modifying user IDs in query params
– Flipping booleans like isPaidUser=true
– Using internal API routes from the frontend
– Uploading weird file types (SVG, .php.jpg, etc.)

Most bugs happen just outside the normal flow. Go there.

It’s Not What You Send — It’s When You Send It 🔁

Sometimes the same request will fail at one point… and succeed at another.

Example flow:

→ Log in normally
→ Go to settings
→ Swap auth token from another user
→ Save changes

Boom — logic flaw. 🔥
These bugs don’t show up in recon. They show up when you mess with state and flow.

💡TL;DR:

Everyone’s testing endpoints.
The smart ones test logic.
That’s where the real bugs hide — behind assumptions the devs didn’t expect you to challenge.

👇 Drop one weird logic flaw you found just by doing something “you weren’t supposed to.”

Until next time, stay curious & keep bending logic.

🫡

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