Prevent Devastating Data Leaks: Securing Supabase RLS Against AI Vulnerabilities

Row-Level Security (RLS) is your ultimate defense layer against catastrophic data breaches when building with Supabase. By default, new tables may be open to public read and write, and AI assistants frequently omit these critical policies. Security Checklist to Protect Your Business: 1. Enable RLS immediately: `ALTER TABLE your_table ENABLE ROW LEVEL SECURITY;` 2. Prevent unauthorized access with strict policies: `CREATE POLICY "Users can read own data" ON profiles FOR SELECT USING (auth.uid() = id);` 3. Prevent privilege escalation by using `SECURITY INVOKER` in Postgres functions unless `SECURITY DEFINER` is explicitly required.