Abstract: Systems and methods of e-commerce threat detection are provided. The method detects fraud, fraudsters, theft rings, and stolen merchandise for sale on various e-commerce platforms. The method begins by receiving a user query relating to the activities associated with an individual or item; compiling data provided on one or more web site relating to the individual or item; determining a probability of fraudulent activities associated with an individual or item; displaying the probability of fraudulent activities to the user; and providing for user customization of the displayed material.