Security Implementation Guide

Production-ready security patterns for web applications.

Input Validation

Sanitization

import DOMPurify from 'isomorphic-dompurify';

function sanitizeHTML(dirty: string): string {
  return DOMPurify.sanitize(dirty, {
    ALLOWED_TAGS: ['b', 'i', 'em', 'strong', 'p'],
    ALLOWED_ATTR: []
  });
}