How does Rails handle large-scale security architecture in fintech-grade systems?

Rails enforces layered security using encryption, strict authentication, authorization policies, and secure infrastructure practices.

Fintech-grade Rails systems require multiple security layers: TLS everywhere, encrypted credentials, strong authentication (OAuth2/JWT), authorization via policy engines, and strict input validation. Additional measures include rate limiting, anomaly detection, audit logging, and secrets management using vault systems. Security is enforced at application, infrastructure, and network layers.