Beginner LevelWeb Security & Cyber Defense
What is a standard HTTP Security Headers checklist (HSTS, CSP, X-Frame-Options, Referrer-Policy)?
❓ Interview Prompt: Explain the essential HTTP security headers checklist for hardening production web applications.
A production-ready HTTP Security Headers configuration checklist:
1
'Strict-Transport-Security': 'max-age=31536000; includeSubDomains; preload' (Forces HTTPS).
2
'Content-Security-Policy': 'default-src 'self'; script-src 'self' 'nonce-...'' (Mitigates XSS).
3
'X-Frame-Options': 'DENY' (Prevents Clickjacking).
4
'X-Content-Type-Options': 'nosniff' (Prevents MIME Sniffing).
5
'Referrer-Policy': 'strict-origin-when-cross-origin' (Protects sensitive URI tokens in Referer headers).
6
'Permissions-Policy': 'camera=(), microphone=(), geolocation=()' (Disables unused browser hardware APIs).
Code Implementation Example
typescript
import helmet from 'helmet';
import express from 'express';
const app = express();
// Helmet automatically sets production security headers!
app.use(helmet({
referrerPolicy: { policy: 'strict-origin-when-cross-origin' }
}));💡Applying Helmet security headers middleware in Express.
🎯 Interview Key Takeaway
Deploy standard security headers (HSTS, CSP, X-Frame-Options, nosniff, Referrer-Policy) to harden web applications.
#Security Headers#Helmet#Hardening#Beginner
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