US Patent 11601435 System and method for graduated deny lists

In an example aspect, a method includes receiving, using a hardware processing device, a first classification of a network address associated with a login attempt as an account validator actor. The method also includes based on the first classification, updating, using the hardware processing device, a system deny list to include the network address for a first length of time. The method also includes after expiration of the first length of time removing the network address from the system deny list, receiving a second of classification of the network address as an account validator actor, and updating the system deny list to include the network address for a second length of time.