What are HTTP Security Headers and why are they critical?

HTTP security headers are directives exchanged between web servers and client browsers that restrict dangerous browser behaviors. They defend against Cross-Site Scripting (XSS), Clickjacking, code injection, and man-in-the-middle packet tampering.

Does CERT-In or GIGW 3.0 require specific security headers?

Yes. Indian CERT-In guidelines and GIGW 3.0 Chapter 9 mandatory controls require all citizen-facing digital endpoints to enforce HSTS (minimum 1 year max-age), X-Frame-Options (DENY or SAMEORIGIN), X-Content-Type-Options (nosniff), and a restrictive Content-Security-Policy.

How do I achieve an A+ grade on CyberCheck India?

To earn an A+ grade, your server must return HSTS with includeSubDomains and preload enabled, a strong Content-Security-Policy without unsafe-inline or unsafe-eval, X-Frame-Options, X-Content-Type-Options nosniff, Referrer-Policy, and suppress all Server and X-Powered-By technology disclosure headers.

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HTTP Security Headers Analyzer & CSP Generator

Test whether your website implements critical security headers (HSTS, CSP, X-Frame-Options, X-Content-Type-Options) to prevent XSS, Clickjacking, and packet tampering in compliance with CERT-In and GIGW 3.0.

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Why HSTS Matters

HTTP Strict Transport Security forces modern browsers to never connect over unencrypted HTTP, completely thwarting Man-In-The-Middle (MITM) downgrade and SSL-stripping attacks.

Content-Security-Policy

CSP establishes an explicit whitelist of trusted scripts, styles, and image sources, neutralizing Cross-Site Scripting (XSS) and rogue crypto-mining injections.

X-Frame-Options

Prevents third-party portals from loading your sensitive citizen forms, login screens, or tender submission buttons inside hidden iframes (Clickjacking).