FRAUD DETECTION

Disclosed herein are techniques for use in fraud detection. In one embodiment, the techniques comprise a method. The method comprises receiving an encrypted current location associated with a user. The method also comprises obtaining an encrypted historical location associated with the user and an encrypted location sensitivity metric that relates to a distance within which locations are considered to be the same. The method further comprises performing an authentication operation based on the encrypted current location, the encrypted historical location and the encrypted location sensitivity metric.