// Security
HTTP response headers that add layers of security: HSTS enforces HTTPS, CSP prevents XSS, X-Frame-Options blocks clickjacking, X-Content-Type-Options prevents MIME sniffing. Most are one-line server config changes.
Why it matters: Security Headers is one of the security signals that shapes how search engines, AI tools, and real visitors experience your website. Getting it right removes friction, protects your rankings, and makes every other optimization work harder. Auditing it regularly is the fastest way to catch regressions before they cost you traffic or conversions.
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