Intuit Inc.
METHOD AND SYSTEM FOR MONITORING FOR AND BLOCKING FRAUDULENT ATTEMPTS TO LOG INTO REMOTE SERVICES USING LIST VALIDATION ATTACKS

Abstract:

Certain aspects of the present disclosure provide techniques for monitoring for fraudulent login attempts to remote services through an application. The method generally includes receiving a request to connect an application to a remote service. A login attempt counter tracking a number of attempts by a user to connect the application to one or more remote services is incremented. Based on determining that the login attempt counter is less than a maximum number of login attempts predicted to correspond to legitimate login activity in the application, the first username is compared to a second username included in a previous request. A distance is calculated between the first username and the second username, and one or more actions are taken to process the request based on determining whether the calculated distance exceeds a maximum predicted distance between usernames in successive requests that corresponds to legitimate login activity.