Disclosed herein are methods, systems, processes, and machine learning models for identifying ephemeral or short lived computing assets in a network. Data indicative of potential ephemeralness associated with the computing assets in the network is received. The received data is processed and provided as input to a logistic machine learning model trainer for classification based on logistic regression. The logistic machine learning model trainer classifies each computing asset as ephemeral or non-ephemeral based on one or more ephemeralness feature characteristics of each of the computing assets that are part of input data. The logistic machine learning model trainer generates a trained logistic machine learning model for identifying new ephemeral computing assets in the network and excluding these new ephemeral computing assets from security operations. The logistic machine learning model is then stored for automatically determining whether a new computing asset in the network is ephemeral.