The ProdFix Blog

The complete security checklist for SaaS products in 2025. 20 items every solo founder needs to verify.

JWTs are widely misimplemented. Here's every security mistake to avoid and the production-safe patterns.

React prevents most XSS but not all. Here's what still trips up developers and how to monitor for it.

Securing your API doesn't require a security team. Here's the essential guide for solo founders.

Your npm dependencies are attack surfaces. Here's how to audit and monitor them continuously.

CSP is the most powerful XSS protection available. Here's how to implement it without breaking your app.

OAuth implementations go wrong in specific ways. Here's what to watch for and how ProdFix catches violations.

AI often writes vulnerable SQL. Here's how to prevent SQL injection in Node.js and detect it in production.

The steps solo founders can take to prevent data breaches — and how to monitor for suspicious activity.

Rate limiting protects your API from abuse and brute force. Here's how to implement it correctly.

CORS misconfiguration is a common security hole. Here's the complete guide to getting it right.

These HTTP security headers protect your users at the browser level. Here's how to add all of them.

npm supply chain attacks are increasing. Here's how to protect your SaaS from compromised dependencies.

Subdomain takeover is an underappreciated security risk for SaaS with multiple subdomains. Here's how to prevent it.

Basic auth is the starting point. Here's the hardening steps that protect real production systems.

API keys need secure generation, storage, and rotation. Here's the complete implementation guide.

DDoS protection doesn't require enterprise spending. Here's the affordable setup for solo founders.

Clickjacking tricks users into clicking on invisible elements. Here's how to prevent it with security headers.

Open redirects enable phishing attacks. Here's how to detect and prevent them in your application.

Deserializing untrusted data is dangerous. Here's how insecure deserialization works and how to prevent it.

You can run basic penetration tests yourself. Here's the tools and techniques for solo founders.

Security logs enable incident response and compliance. Here's what to log in your production SaaS.

If you're in healthcare-adjacent SaaS, here's the minimal technical HIPAA requirements.

Broken access control is the #1 web security risk. Here's how to detect and prevent it in SaaS.