dev.to· Oct 2, 2026· by devanshu_patil

PostgreSQL Row-Level Security: Multi-Tenancy Without Leaking Tenant Data

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Implement bulletproof database-level multi-tenancy in SaaS applications using PostgreSQL Row-Level Security (RLS) and runtime session variables.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#postgres#security#database#backend