Netskope, Inc.

Yahoo! Inc.

Ariel Faigon

Krishna Narayanaswamy

Ravi Ithal

Steve Malmskog

Abhay Kulkarni

Jeevan Tambuluri

Priyank Shanker Garg

Timothy M Converse

The technology relates to machine responses to anomalies detected using machine learning based anomaly detection. In particular, to receiving evaluations of production events, prepared using activity models constructed on per-tenant and per-user basis using an online streaming machine learner that transforms an unsupervised learning problem into a supervised learning problem by fixing a target label and learning a regressor without a constant or intercept. Further, to responding to detected anomalies in near real-time streams of security-related events of tenants, the anomalies detected by transforming the events in categorized features and requiring a loss function analyzer to correlate, essentially through an origin, the categorized features with a target feature artificially labeled as a constant. An anomaly score received for a production event is determined based on calculated likelihood coefficients of categorized feature-value pairs and a prevalencist probability value of the production event comprising the coded features-value pairs.

Machine learning based anomaly detection initialization

Machine learning based anomaly detection and response

The technology disclosed relates to machine learning based anomaly detection. In particular, it relates to constructing activity models on per-tenant and per-user basis using an online streaming machine learner that transforms an unsupervised learning problem into a supervised learning problem by fixing a target label and learning a regressor without a constant or intercept. Further, it relates to detecting anomalies in near real-time streams of security-related events of one or more tenants by transforming the events in categorized features and requiring a loss function analyzer to correlate, essentially through an origin, the categorized features with a target feature artificially labeled as a constant. It further includes determining an anomaly score for a production event based on calculated likelihood coefficients of categorized feature-value pairs and a prevalencist probability value of the production event comprising the coded features-value pairs.

Anomaly detection with machine learning

Machine learning based anomaly detection

Techniques are provided through which 'suspicious' websites may be identified automatically. A suspicious website is one that is associated with many changes or an inconsistent number of changes in web registry information over time. Registry information is received when changes to the registry information occur. The registry information is referred to as a transaction. A transaction is comprised of a plurality of values that each correspond to a characteristic. A characteristic is a property of a website, such as the website's contact information. A count associated with a particular characteristic-value pair is updated each time the particular value is identified in a transaction. A high count indicates that the website associated with the particular value is associated with a lot of changes. Therefore, a website associated with a high count is suspicious. Other factors that may be used for identifying a 'suspicious' website include how often and how much the count changes.

Identifying exceptional web documents

Growing community of inventors

Los Altos, CA, United States of America

Ariel Faigon