SaaS Security Best Practices

Expert guidance for securing SaaS applications — authentication, authorization, API protection, session management, and defense against common attacks.

Core Principles

• Defense in depth — multiple layers, never rely on a single control
• Least privilege — grant minimum access needed, default deny
• Fail secure — errors should deny access, not grant it
• Don't roll your own crypto — use proven libraries and standards
• Assume breach — design systems to limit blast radius

Authentication

Password Security