If you're building with Cursor, Lovable, or Bolt, you need a security scanner that works as fast as you do. Here's how the top options compare — and which one vibe coders should use.
Anay Pandya
333 words
Anay Pandya
Founder of ZeriFlow · 10 years fullstack engineering · About the author
Key Takeaways
| Tool | What it checks | Speed | Free tier | Best for |
|---|---|---|---|---|
| ZeriFlow | 80+ checks: headers, TLS, cookies, DNS, email auth | < 60s | 3/day, no account | Full deployed app scan |
| SecurityHeaders.com |
Keep reading
| 7 HTTP headers |
| < 5s |
| Unlimited |
| Quick header check |
| Snyk | Dependencies, source code | Minutes | Yes (limited) | Dependency CVEs |
| OWASP ZAP | Active vulnerability testing | Minutes | Yes (open source) | Deep pentesting |
| Qualys SSL Labs | TLS/SSL only | ~30s | Unlimited | TLS deep dive |
Is your site actually secure?
Run a free check — 60 seconds
ZeriFlow scans any public URL and returns 80+ security checks in under 60 seconds. It covers everything an AI-generated app typically gets wrong: missing security headers, weak TLS, insecure cookie flags, CORS issues, DNS misconfiguration, and email authentication failures.
Free tier: 3 scans per day, no account required. Pro: €9.99/month, unlimited scans, CI/CD integration, domain monitoring.
Checks 7 HTTP response headers and gives an A-F grade. Instant and free with no account. Limitation: header-only — misses TLS strength, cookie security, DNS, and email auth.
Scans your repository for vulnerable packages. Integrates with GitHub for automated alerts. Does not check deployed runtime configuration — complementary to ZeriFlow.
Free open-source active vulnerability scanner. Powerful but requires security expertise. Recommended quarterly or before major launches handling sensitive data.
This combination covers 95% of what developers building with AI tools need, without adding friction to the development workflow.
For vibe coders, ZeriFlow is the right primary scanner — it's fast enough to use on every deployment, free to start, and covers all the security gaps that AI code generators leave behind. Combine it with npm audit for dependency coverage and you have a complete pre-launch security routine that takes under 5 minutes.
Scan your vibe-coded app before you ship — free.
80+ checks in 60 seconds. Find every security gap AI tools left behind.
Related resources
Website Vulnerability Scanner
Run a broader website security audit across headers, TLS, DNS, cookies, SEO, and disclosure checks.
Security Headers Checker
Check CSP, HSTS, X-Frame-Options, and other response headers.
SSL Checker
Review TLS certificate, HTTPS, and transport security signals.
DMARC Checker
Validate email authentication records for domain spoofing protection.
CSP Checker
Review Content-Security-Policy coverage and common gaps.
May 12, 2026
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Monitor your security score
Schedule recurring scans and catch regressions after deployments.
