Abstract: Methods, systems, and computer program products for predicting an account takeover tsunami using dump quakes are disclosed. A computer-implemented method may include analyzing activity for a plurality of user accounts based on detecting an abnormal increase in system activity, determining the abnormal increase in the system activity is associated with account validation attacks performed by an unauthorized party, identifying attributes of a plurality of user accounts associated with the account validation attacks, searching online locations using the identified attributes of the user accounts to find a data breach source, monitoring the online locations periodically based on the identified attributes of the user accounts to detect future publication of a dump of private user data, sending a notification to another organization in advance of the publication of the dump of private user data to allow the other organization to adjust security of one or more other systems in advance.

Abstract: Methods, systems, and computer program products for predicting an account takeover tsunami using dump quakes are disclosed. A computer-implemented method may include analyzing activity for a plurality of user accounts based on detecting an abnormal increase in system activity, determining the abnormal increase in the system activity is associated with account validation attacks performed by an unauthorized party, identifying attributes of a plurality of user accounts associated with the account validation attacks, searching online locations using the identified attributes of the user accounts to find a data breach source, monitoring the online locations periodically based on the identified attributes of the user accounts to detect future publication of a dump of private user data, sending a notification to another organization in advance of the publication of the dump of private user data to allow the other organization to adjust security of one or more other systems in advance.