Systems and methods for digital threat assessment and mitigation using t-digest score distribution representations and percentile-based threat scoring in a digital threat mitigation platform

Abstract

A system and method for quantile-based assessment and handling of digital events in a digital threat mitigation platform includes receiving, via an application programming interface (API), a request from a subscriber to assess a threat of a digital event, computing, using one or more threat scoring machine learning models, a digital threat inference based on one or more corpora of feature vectors associated with the digital event, wherein the digital threat inference includes an uncalibrated digital threat score, retrieving, from a database, a T-Digest data structure of historical digital threat scores of the subscriber, computing, using the T-Digest data structure of historical digital threat scores, a percentile-based threat score based on the uncalibrated digital threat score computed for the digital event, and executing an automated disposal decision computed for the digital event based on at least the percentile-based threat score satisfying automated decisioning instructions of the digital threat mitigation platform.