supabase

Enforce Row Level Security in Supabase by enabling RLS on all public tables and writing least-privilege policies using auth.uid(). This ensures users can only read and write their own records, preventing accidental data leaks at the database layer.

Create Supabase clients with global Authorization headers to propagate JWT authentication context. This ensures that authenticated access is enforced consistently across auto-generated PostgREST endpoints, typed CRUD operations, and real-time subscriptions.

Verify JWT tokens in Supabase Edge Functions by implementing server logic in the Deno runtime that validates the caller's JWT. This preserves the authenticated context so database RLS rules remain effective during server-side workflows.

Securely manage storage bucket policies and realtime subscriptions in Supabase by defining controlled file operation governance and database change streams. This requires handling realtime, storage, and migrations safely alongside RLS policies.

Prevent data leaks across Supabase APIs and database tables by enforcing RLS by default on every public table and defining least-privilege policies. This secures authorization consistently across SQL tables, API access, and server-side logic.

Yes, you need to enable RLS on all public tables to secure a Supabase backend. This is a strict requirement to enforce per-user and per-team access at the database layer, mitigating the difficulty of consistent authorization across API contexts.