Disclosed are a method and
system for generating a behavior profile for a new entity. The method is performed in response to and immediately after a new entity is added to a fraud detection
system. The method includes generating a doppelganger behavior profile for the new entity based on
feature data of the new entity and pre-existing entities. Generating the profile includes determining a similarity
score for each pre-existing entity,
ranking the plurality of pre-existing entities based on the
score, selecting pre-existing entities based on the
ranking, and combining behavior profiles of the preexisting entities to produce the profile. The method also includes assigning the profile to the new entity and monitoring the new entity. The method further includes detecting fraud, an anomaly, and / or malicious intent based on the profile, and automatically suspending an aspect of the new entity in response to the detection.