Systems and methods for uniquely identifying and regularly authenticating users at login

Systems and methods for uniquely identifying and regularly authenticating users at login are disclosed. A method may include an authentication computer program receiving a user identifier for a user as part of a login attempt from a workstation computer program; communicating a multifactor authentication request to an authenticator application executed on a user mobile electronic device; receiving a response to the multifactor authentication request from the authenticator application; verifying that the response to the multifactor authentication request matches an expected value; and saving user activity data associated with the login attempt, and a user trust computer program calculating a user trust score based on the user activity data; determining that the user trust score is above a threshold; and authorizing the login attempt to the workstation and a user session on the workstation.