Web Storage (localStorage, sessionStorage, cookies)

The recommended approach is to not store sensitive information in Web Storage: 1) Web Storage data is stored in plaintext and accessible via JavaScript, 2) It's vulnerable to XSS attacks that can expose stored data, 3) Client-side encryption doesn't provide adequate protection against attacks, 4) Sensitive data should be handled server-side with proper security measures, 5) Use secure HTTP-only cookies for sensitive session data, 6) Web Storage is meant for non-sensitive, client-side data only, 7) Even encrypted data in Web Storage can be subject to various attacks, 8) This is a fundamental security principle for web application development.