Vectra Ai, Inc.

Daniel Carlton Hannah

Nicolas Beauchesne

Sohrob Kazerounian

Himanshu Mhatre

Tuomas P Oikarinen

Disclosed is an approach for detecting malicious network activity (e.g. based on a data hoarding activity identifies using a graph mixture density neural network (GraphMDN)). Generally, the approach includes generating embeddings using a graph convolution process and then processing the embeddings using a mixture density neural network. The approach may include collecting network activity data, generating a graph representing the network activity, or an aggregation thereof that maintains the inherent graphical nature and characteristics of the data, and training a GraphMDN in order to generate pluralities of distributions characterizing one or more aspects of the graph representing the network activity. The approach may also include capturing new network activity data, and evaluating that data using the distributions generated by the trained GraphMDN, and generation corresponding detection results.

Method, product, and system for detecting malicious network activity using a graph mixture density neural network

Disclosed is an improved approach for detecting potentially malicious activity on a network. The present improved approach generates a multi-dimensional activity model based on captured network activity. Additional network activity is captured, and relative activity values are determined therefor. Determination of whether the additional network activity corresponds to potentially malicious activity is obtained by fitting the relative activity values of the additional network activity to the multi-dimensional relative activity model.

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Melrose, MA, United States of America

Daniel Carlton Hannah