US Patent 10462126 Self-adjusting multifactor network authentication

A network authentication device that includes an authentication engine. The authentication engine is configured to receive an authentication key request from a user device that identifies an account. The authentication engine is configured to obtain an authentication key and to establish a first set of authentication rules for the authentication key. The authentication engine is configured to identify one or more triggering events associated with an increased threat to the account and to establish a second set of authentication rules for the authentication key. The authentication engine is configured to perform key validation for the authentication key using the first set of authentication rules and to send the authentication key to the user device. The authentication engine is configured to detect a triggering event from the one or more triggering events has occurred and perform the key validation for the authentication key using the second set of authentication rules.