Pre-Render Security Middleware for Login, Checkout, and Account Pages

Security checks that run after rendering can leak protected UI, private routes, or account state.

Pre-render middleware lets an application make a decision before the response body exists.

Applications need enough context to route a request, but not so much detail that private checks become public documentation.

Broad categories such as network_risk, identity_risk, and request_risk are safer than exposing raw internal evidence.

On content pages, an uncertain request may be allowed. On login, signup, checkout, and API endpoints, the same uncertainty can justify a challenge.

Mode-based enforcement lets teams reduce friction where risk is low and become strict where abuse is expensive.