US Patent 8973096 Fraud detection in adaptive authentication systems

There is disclosed some techniques for processing an authentication request which includes a user identifier and current user data. In one example, the technique comprises receiving the authentication request at an adaptive authentication system which includes a database having a set of entries with each entry of the set of entries including an identifier and previous user data in connection with previous authentication requests. The adaptive authentication system constructed and arranged to perform an adaptive authentication operation on the authentication request as well as an unsupervised machine learning operation on the authentication request.