1. A method for monitoring network traffic using one or more network computers, wherein execution of instructions by the one or more network computers perform the method comprising: instantiating a monitoring engine to perform actions, including: monitoring network traffic associated with a plurality of entities in one or more networks to provide one or more metrics; providing a device relation model based on the plurality of entities, the network traffic, and the one or more metrics; and providing interest information for a user based on one or more properties associated with the user; instantiating an inference engine to perform actions including associating each entity in the plurality of entities with an interest score that is further associated with a level of interest to the user, wherein the level of interest is based on the interest information, the device relation model, and the one or more metrics; and instantiating an alert engine to perform actions, including: generating a plurality of alerts associated with the plurality of entities based on the one or more metrics; and providing one or more alerts to the user from the plurality of alerts based on one or more ranked interest scores associated with one or more entities.