The ProdFix Blog

Production guides for solo founders, vibe coders, and indie hackers. Ship faster. Break less.

⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
Open Redirect Vulnerabilities in SaaS: Detection and Prevention
Open redirects enable phishing attacks. Here's how to detect and prevent them in your application.
2025-04-29 · 4 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
Insecure Deserialization in Node.js: Risks and Prevention
Deserializing untrusted data is dangerous. Here's how insecure deserialization works and how to prevent it.
2025-04-30 · 5 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
Penetration Testing Basics for Solo Founders
You can run basic penetration tests yourself. Here's the tools and techniques for solo founders.
2025-05-01 · 5 min read
prodfix ● All Projects ○ Issues ○ Performance ○ Security ○ UX All Projects 98.7% uptime this month 3 open issues 1.4s avg LCP ● main-saas 142 errors · 23 open · LCP 1.8s critical ● side-project-2 8 errors · 1 open · LCP 2.1s warn ● chrome-ext 0 errors · all clear · LCP 0.9s good
Security
Security Logging: What to Log for Compliance and Incident Response
Security logs enable incident response and compliance. Here's what to log in your production SaaS.
2025-05-02 · 5 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
HIPAA Technical Requirements for SaaS: What You Actually Need
If you're in healthcare-adjacent SaaS, here's the minimal technical HIPAA requirements.
2025-05-03 · 6 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
Broken Access Control in SaaS: The Most Common Vulnerability
Broken access control is the #1 web security risk. Here's how to detect and prevent it in SaaS.
2025-05-04 · 5 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
Secret Scanning for SaaS Repositories: Before You Commit
Secrets in git repositories cause breaches. Here's how to scan and prevent secret exposure.
2025-05-05 · 4 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
WebAuthn and Passkeys in Production: Implementation Guide
Passkeys are the future of authentication. Here's how to implement them in your SaaS production app.
2025-05-06 · 6 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
Dependency Pinning for SaaS: Reproducible Builds and Security
Pinned dependencies prevent supply chain attacks and ensure reproducible production builds.
2025-05-07 · 4 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
Two-Factor Authentication Implementation: Production Guide
TOTP 2FA reduces account takeover risk. Here's the production implementation guide.
2025-05-08 · 5 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
GDPR Data Deletion Implementation: Right to Erasure in SaaS
GDPR requires user data deletion on request. Here's the technical implementation that satisfies auditors.
2025-05-09 · 5 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
Secure Session Management in Production SaaS
Session management mistakes cause account takeovers. Here's the secure implementation guide.
2025-05-10 · 5 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
Content-Type Security Headers: Preventing MIME Sniffing Attacks
MIME type sniffing enables certain attacks. Here's the headers that prevent it.
2025-05-11 · 4 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
Security
Audit Log Implementation for SaaS: What, When, and How
Audit logs are required for compliance and useful for debugging. Here's the production implementation.
2025-05-12 · 5 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Security
Kubernetes Security for Solo Founders: The Essential Setup
If you're running Kubernetes, security defaults aren't enough. Here's the minimal security hardening.
2025-05-13 · 5 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
Security
Third-Party Risk Management for Solo Founder SaaS
Every third-party tool you use is a risk. Here's how to assess and manage third-party security risk.
2025-05-14 · 5 min read
prodfix ● All Projects ○ Issues ○ Performance ○ Security ○ UX All Projects 98.7% uptime this month 3 open issues 1.4s avg LCP ● main-saas 142 errors · 23 open · LCP 1.8s critical ● side-project-2 8 errors · 1 open · LCP 2.1s warn ● chrome-ext 0 errors · all clear · LCP 0.9s good
Glossary
What Is OpenTelemetry? Do You Need It for Your SaaS?
OpenTelemetry is the open standard for observability. Here's what it does and whether solo founders need it.
2025-04-25 · 4 min read
prodfix ● All Projects ○ Issues ○ Performance ○ Security ○ UX All Projects 98.7% uptime this month 3 open issues 1.4s avg LCP ● main-saas 142 errors · 23 open · LCP 1.8s critical ● side-project-2 8 errors · 1 open · LCP 2.1s warn ● chrome-ext 0 errors · all clear · LCP 0.9s good
Glossary
What Is Distributed Tracing? (And Is It Overkill for Solo SaaS?)
Distributed tracing follows requests across services. Here's when you need it and when you don't.
2025-04-26 · 4 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Glossary
What Is Synthetic Monitoring? How It Differs From RUM
Synthetic monitoring runs automated tests. RUM captures real users. Here's the difference and when to use each.
2025-04-27 · 4 min read
⚠ New Error Detected TypeError: Cannot read properties of undefined Checkout.jsx:47 · 5 users · 2 min ago View in IDE → Dismiss Alert via 📧 Email · Slack within 60 seconds Fix via Cursor + MCP avg 4 min to fix
Glossary
What Is Chaos Engineering? Should Solo Founders Use It?
Chaos engineering deliberately causes failures to find weaknesses. Here's the solo founder version.
2025-04-28 · 4 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Glossary
What Is MTTR and MTTD? Key Metrics for Production Reliability
Mean Time to Repair and Mean Time to Detect are the core reliability metrics. Here's what they mean.
2025-04-29 · 4 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Glossary
What Is Technical Debt? A Practical Definition for SaaS Founders
Technical debt explained without jargon. What it is, how it accumulates, and when to pay it down.
2025-04-30 · 4 min read
PRE-LAUNCH CHECKLIST Error monitoring Alerts configured Performance tracking Security scan MCP setup Rate limiting PROGRESS 4 / 6 items completed ⚠ NEXT UP Run security scan CSP + XSS audit Start scan →
Glossary
What Is Feature Parity in SaaS Development?
Feature parity matters for API compatibility and migrations. Here's what it means in practice.
2025-05-01 · 3 min read
✓ Deploy successful 0 new errors · 2m ago Error rate: 0.02% ▼ 80% from last week LCP: 1.2s P75 · Good ✓ Active users: 142 ↑ Product Hunt day prodfix · ship fast · stay stable · solo founder monitoring
Glossary
What Is a Dark Launch? Safe Feature Deployment for Solo Founders
Dark launches deploy code that's not yet activated. Here's how they work and why they're useful.
2025-05-02 · 3 min read