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Developer shares how to build a privacy-first Astro site with strict security headers

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A developer has published a detailed guide on building a secure, privacy-respecting website using the Astro framework, achieving a green rating on securityheaders.com by default. The approach centers on a strict Content-Security-Policy that blocks inline scripts, effectively neutralizing a broad class of cross-site scripting attacks. To eliminate third-party privacy leaks, the guide recommends self-hosting web fonts instead of loading them from Google's CDN, which exposes visitor IP addresses to an external server. Additional HTTP security headers — including HSTS, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy — are configured to close remaining attack vectors. Astro's build-time rendering and zero-JavaScript-by-default architecture are highlighted as key factors that make enforcing these strict policies practical for most sites.

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