CAPEC-383 - Harvesting Usernames or UserIDs via Application API Event Monitoring

An attacker hosts an event within an application framework and then monitors the data exchanged during the course of the event for the purpose of harvesting any important data leaked during the transactions. One example could be harvesting lists of usernames or userIDs for the purpose of sending spam messages to those users. One example of this type of attack involves the attacker creating an event within the sub-application. Assume the attacker hosts a "virtual sale" of rare items. As other users enter the event, the attacker records via MITM proxy the user_ids and usernames of everyone who attends. The attacker would then be able to spam those users within the application using an automated script.






Targeted software is utilizing application framework APIs

A software program that allows a user to man-in-the-middle communications between the client and server, such as a man-in-the-middle proxy.