If you've shipped anything on Supabase, you've hit this:
new row violates row-level security policy for table "notes"
```
Your first instinct is panic — *is my data exposed?* Here's the twist:
If you've shipped anything on Supabase, you've hit this: new row violates row-level security...
If you've shipped anything on Supabase, you've hit this:
new row violates row-level security policy for table "notes"
```
Your first instinct is panic — *is my data exposed?* Here's the twist:

Your app works. Sign-ups land, dashboards load, and Stripe pays out. Then one day a stranger reads...

If you built a Supabase app quickly - with an AI coding tool or by hand - the row-level-security...

A wrong RLS policy doesn't throw an error, it just returns the wrong rows, so it ships untested and...

A summary of Supabase platform security changes made in 2025 and the security defaults planned for 2026.

Originally published on howsafeismyapp.com. Here is the uncomfortable truth about most Lovable apps:...

The 4 RLS policy patterns that cover 95% of multi-tenant SaaS, how to test them locally, and the service_role footgun that bites…