How does Rails handle high-scale security hardening in production systems?

Rails uses secure headers, encrypted secrets, strong authentication, and dependency hardening for production security.

Security hardening in Rails includes enforcing HTTPS, secure cookies, CSRF protection, Content Security Policy (CSP), and strict parameter filtering. Sensitive credentials are stored in encrypted credentials or vault systems. Dependency scanning tools are used to prevent vulnerable gems. Additional measures include rate limiting, IP filtering, and audit logging.