A computer based method and system generates alerts based on the detection of an advanced scenario in a data set. The system and method may take data related to events and entities, transform the data, and apply advanced scenarios to the data to produce matches that reflect the occurrence of an advanced scenario and the behavior of interest. The advanced scenarios can be defined to cover specific product lines and services, lines of businesses, and combinations thereof. The advanced scenarios can be defined to be indicative of a behavior class, or a specific behavior which is part of a behavior class. Alerts produced by the system can be grouped, prioritized and routed such that the appropriate users are notified in a timely manner. The system and method can be applied to a variety of industries including financial and health care, and can detect both illicit and licit behaviors of interest.