ADVANCED ZERO-TRUST SECURITY POLICY ENGINE • OWASP TOP 10 HARDENING
Advanced Zero-Trust CSP & Security Header Studio
Generate strict Content-Security-Policy (CSP), HSTS, and X-Content-Type-Options headers for Next.js 15, Nginx, and Apache in seconds.
XSS MITIGATION
100% Enforced
HSTS MAX-AGE
2-Year Preload
TARGET PLATFORM
nextjs
CYBER GRADE
A+ Security Grade
1. SECURITY DIRECTIVES & INTEGRATIONS:
Allow Google Tag Manager & Analytics
Whitelists googletagmanager.com and google-analytics.com
Allow Stripe Payments API & Checkout
Whitelists js.stripe.com and api.stripe.com
Allow Google Fonts Styles & Static
Whitelists fonts.googleapis.com & fonts.gstatic.com
Strict Anti-Clickjacking (frame-ancestors none)
Prevents iframe embedding attacks
HSTS Strict Transport Security (max-age 2yr)
Enforces HTTPS with preload directive
MIME-Type Sniffing Protection (nosniff)
Prevents malicious script injection via images
// next.config.mjs
/** @type {import('next').NextConfig} */
const nextConfig = {
async headers() {
return [
{
source: '/:path*',
headers: [
{
key: 'Content-Security-Policy',
value: "default-src 'self'; script-src 'self' https://www.googletagmanager.com https://www.google-analytics.com https://js.stripe.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; img-src 'self' data: https: blob:; font-src 'self' data: https://fonts.gstatic.com; connect-src 'self' https://www.google-analytics.com https://api.stripe.com https://fonts.gstatic.com; frame-src 'self' https://js.stripe.com; frame-ancestors 'none'; upgrade-insecure-requests;"
},
{
key: 'Strict-Transport-Security',
value: 'max-age=63072000; includeSubDomains; preload'
},
{
key: 'X-Content-Type-Options',
value: 'nosniff'
},
{
key: 'Referrer-Policy',
value: 'strict-origin-when-cross-origin'
},
{
key: 'Permissions-Policy',
value: 'camera=(), microphone=(), geolocation=()'
}
]
}
];
}
};
export default nextConfig;
TOOL GUIDE & TECHNICAL FAQ
Frequently Asked Questions — Zero-Trust Content Security Policy (CSP) Generator
A Content Security Policy (CSP) is an HTTP response header that restricts which scripts, styles, frames, and images a browser is allowed to load, effectively eliminating Cross-Site Scripting (XSS) and data injection vulnerabilities. Modern browsers and security auditors give higher trust rankings to hardened CSP headers.
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