Supabase Mastery · Step 5 of 6
Row Level Security
Learn to write, test, and audit Postgres RLS policies on Supabase so your data stays locked to the right users.
What you’ll walk away with
- Explain why RLS exists and identify the common mistake that leaves Supabase projects exposed
- Write real row level security policies for your Postgres tables
- Test your RLS policies to confirm they actually block unauthorized access
- Audit an existing project's policies to find gaps before they become incidents
- Apply everything hands-on by securing an entire project from start to finish
Questions people ask before they start
Do I need prior Postgres or Supabase experience?
You should be comfortable with basic SQL and have used Supabase at least a little. The course focuses specifically on RLS, not general database or Supabase fundamentals.
Is this course just theory, or do I actually write policies?
You write real policies in the 'Writing Real Policies' lesson, then test them, and finish with a hands-on project where you secure an entire Supabase project end to end.
Why does a cybersecurity company teach this instead of just app-building tips?
Securafy built AI University specifically to teach building with AI safely — RLS is one of the most common places apps ship with real, exploitable holes, so it's treated as its own dedicated course rather than a side note.
Will this teach me how to audit an existing app's security, not just build new policies?
Yes. The 'Testing and Auditing Your Policies' lesson is specifically about reviewing and verifying policies you or someone else already wrote, not just writing new ones.
How long is the course?
It's one focused module with four lessons, moving from why RLS matters, to writing policies, to testing/auditing them, to a hands-on project securing a full project.
What's the final project?
The 'Hands-On: Secure an Entire Project' lesson has you apply everything from the earlier lessons to lock down a complete project rather than just isolated tables.