Have users gone through a login procedure via your application?

The question concerns verifying whether users have gone through the login process via your application. This is usually implemented using an authentication mechanism that records the fact of a successful login.

In practice, this can be:

• Checking for an active user session (for example, using HTTP sessions or JWT tokens).
• Logging successful login attempts.
• Storing authentication state in a database or cache.

For example, in a Java application using Spring Security, you can check if a user is authenticated as follows:

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

Authentication auth = SecurityContextHolder.getContext().getAuthentication();
if (auth != null && auth.isAuthenticated() && !(auth instanceof AnonymousAuthenticationToken)) {
    // User is logged in
} else {
    // User is not authenticated
}

Thus, the fact of passing the login procedure is determined by the presence and status of user authentication in the system.