2 resources from OWASP we point founders to, and the questions each answers.
📄 Article
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Why we picked it
This is the number one web security risk, and it is exactly your question: users reaching data they should not. OWASP is the reference the whole industry uses, and this page names the concrete failures (enforcing access on the page instead of the record, trusting an ID in the URL) in plain terms. Understanding the category helps you spot it in any tool, not just Bubble.
Why we picked it
IDOR is the everyday version of the danger in one sentence: change the id in a URL or request from 1042 to 1043 and read someone else's record. This page defines it and shows why the fix is an ownership check on the server, not an unguessable id. Once you see it, you will test your own app by changing numbers in requests.