SecuritySecurityNode.js
Web Security Essentials Every Developer Must Know
Protect your applications from XSS, CSRF, SQL injection, and other common web security vulnerabilities.
Apr 4, 202610 min read11,200 views1450 words
XSS Prevention
Never trust user input. Always sanitize and escape.
TS
| 1 | import DOMPurify from 'dompurify'; |
| 2 | |
| 3 | const clean = DOMPurify.sanitize(userInput); |
| 4 | document.getElementById('content').innerHTML = clean; |
CSRF Protection
TS
| 1 | // Generate CSRF token on the server |
| 2 | const csrfToken = crypto.randomBytes(32).toString('hex'); |
| 3 | req.session.csrfToken = csrfToken; |