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Your AI App Has a Hole in It Right Now

The security checklist with copy-paste prompts most builders only find after something breaks

Ruben Dominguez's avatar
Ruben Dominguez
Jun 26, 2026
∙ Paid

Someone shared a pre-launch security checklist on r/vibecoding last month.

Image

It went viral. The replies were all the same: “I shipped without doing any of this.”

Some were staring at $200 Supabase bills. A few had already received legal letters. One founder’s entire database was readable by anyone who opened DevTools and typed a basic command.

AI coding tools are extraordinary at generating working code.

They are genuinely bad at generating secure code by default.

Those 2 things look identical until they do not.

This is the checklist. The one you run before real users touch anything.

What is inside:

▫️ The legal minimum before you collect a single email

▫️ The 5-minute database check that prevents the most common breach

▫️ The 4 auth failure tests that catch 80% of vulnerabilities

▫️ 4 copy-paste prompts that cover most of your security surface in 10 minutes

▫️ The infrastructure settings that protect your wallet

▫️ A screenshot checklist to keep next to your deploy button


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  • What top VCs look for in 2026. 40 questions they will ask. How Sequoia, a16z, and Benchmark each decide.

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