HTTP Security Headers & CSP Evaluator – Grade & Harden Website Protection

Why HTTP Security Headers Are Critical for Web Protection

Modern web security does not stop at SSL/TLS certificates. Even with HTTPS enabled, vulnerable web applications remain exposed to Cross-Site Scripting (XSS), clickjacking attacks, MIME-type confusion, and unauthorized iframe embedding if proper HTTP security headers are omitted.

Essential Headers Evaluated in This Audit

• Strict-Transport-Security (HSTS): Forces web browsers to interact with your domain exclusively over encrypted HTTPS connections for a specified duration, preventing SSL-stripping man-in-the-middle attacks.
• Content-Security-Policy (CSP): A comprehensive defense-in-depth framework that restricts which domains can load scripts, styles, images, and fonts, severely mitigating XSS and data exfiltration.
• X-Frame-Options: Instructs browsers whether your page can be embedded inside <frame>, <iframe>, or <object> tags, eliminating UI redressing and clickjacking.
• X-Content-Type-Options: Setting this header to nosniff stops web browsers from interpreting user uploads as executable script files.
• Referrer-Policy: Governs how much confidential URL query information is passed to external domains when visitors follow links.
• Permissions-Policy: Locks down access to sensitive hardware peripherals including web cameras, microphones, and geolocation APIs.

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