Security · Security Guide
Why Hiding a Sidebar Link Is Not Authorization
A private editorial starting point awaiting technical review and publication.
Editorial outline
Document the engineering problem, the architectural reasoning, implementation evidence, trade-offs, security considerations and lessons learned.
TEXT
Hiding a sidebar link only changes what a user can see in the interface. It does not prevent them from accessing
the underlying route, API endpoint, or server-side action.
Real authorization must be enforced at the backend using mechanisms such as role-based access control (RBAC),
permissions, middleware, policies, guards, or server-side validation.
For example, removing an Admin Settings link from a standard user's sidebar is useful for UI clarity. But if that user
can still manually enter `/admin/settings` and access the page, the application has an authorization vulnerability.
A secure system should therefore apply access control at multiple levels:
* UI layer: Hide features the user cannot use.
* Route/API layer: Reject unauthorized requests.
* Business logic layer: Verify permissions before sensitive operations.
* Data layer: Ensure users can access only data within their permitted scope.
* The principle is simple: visibility controls improve the interface; authorization controls protect the system.