What is the security filter chain?
It's a security filter chain that provides authentication with manual intervention such that multiple administrators of the system are able to approve users with auditability and traceability.
It's a series of user-completed activities—such as password authorization, token verification, and many others—that require multiple factors of authentication to increase the level of security in the system.
It's a servlet filter chain where each filter has a specific responsibility such as security context, user and password authorization, exception translation, or filter security interception, processed in order.
It's a security filter chain that consumes multiple factors of authentication—such as password, token verification, biometrics, and IP whitelisting—to successfully log a user into the system.