What this page helps you understand
Security headers are not a substitute for secure code, but they are a strong baseline. Fixnx reports missing and weak headers without letting header-only issues outrank confirmed exploitable vulnerabilities.
What Fixnx checks
HSTS
Content Security Policy
X-Frame-Options
X-Content-Type-Options
Referrer-Policy
Permissions-Policy
Security headers are a baseline, not the whole story
Headers help browsers enforce safer behavior, but a missing header should not be treated the same as confirmed SQL injection or authentication bypass. Priority matters.
Fixnx checks the common browser protections and explains what they do in plain language. The report keeps hardening recommendations useful while still prioritizing higher-impact vulnerabilities.
Use this page when you want a quick header review before sending a site to customers or auditors.
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FAQ
Which security header matters most?
It depends on the app. HSTS and CSP are often important, but the right priority depends on exposure and confirmed risks.
Can headers fix vulnerable application code?
No. Headers reduce browser-side risk, but server-side vulnerabilities still need code and configuration fixes.