PayPal’s Dr. V. Chandramouliswaran feels PayPal is in risk business as it uses story-based analytics to fight frauds and risks. He feels the approach used by PayPal is different. Their system has over 500 petabytes of data that requires 2 petabytes to process in seconds. To assess the risk and payments all 3 trillion events are added. Customers’ past behavior is also analyzed using sophisticated algorithms, deep learning, active learning, and multi-class models.