Patent Document ID: 9275211
Application ID: 13844417
Patent Flag: 1

Claim One:
1. A method of verifying that a user is authorized to access a computer-accessible resource, the method comprising: maintaining data reflecting, in aggregate, a range of behaviors of fraudulent automated access attempts performed during voice call sessions; maintaining a communication number of a verification device associated with a user; receiving a request by the user to access a computer-accessible resource; utilizing the communication number to establish a voice call session with the user's verification device in order to send a request that the user perform a verification action; monitoring one or more voice call characteristics indicative of the user's behavior during the voice call session; determining whether the user successfully performed the requested verification action; comparing the monitored one or more voice call characteristics with an authentication rule to determine whether the authentication rule has been satisfied by the monitored voice call characteristics, wherein the authentication rule is not satisfied if the monitored one or more voice call characteristics fall within the range of behaviors indicative of fraudulent automated access attempts performed during voice call sessions as reflected by the maintained data; and if the verification action has been successfully completed by the user and if the authentication rule has been satisfied by the monitored voice call characteristics, generating an authentication response that indicates that the user has been authenticated for access to the computer-accessible resource.