公开(公告)号：US12058157B1

公开(公告)日：2024-08-06

申请号：US17831854

申请日：2022-06-03

Applicant: Amazon Technologies, Inc.

Inventor： Brendan Cruz Colon ,  Lance Dennis Leishman ,  Matthew Michael Sommer ,  Alexander Noble Adkins ,  Samantha Felice ,  Christopher Miller ,  Dennis Naylor Brown ,  Diana Keller ,  Michael Alexander Cecil ,  Michael Chad McClure ,  Joel Booker ,  Adam Edward Powers ,  Dorion Carroll

IPC: H04L9/40

CPC classification number: H04L63/1425 ,  H04L63/102

Abstract: Devices and techniques are generally described for anomalous computer activity detection. In various examples, first computer activity data associated with a first account may be determined. A first linear detection event that corresponds to the first computer activity data may be determined. In some examples, a set of gradient-based data associated with the first linear detection event may be determined. The set of gradient-based data may represent comparative analysis of the first computer activity data with computer activity data of other accounts. In some examples, first data representing the first linear detection event and the set of gradient-based data may be generated. In various cases, network access for the first account may be disabled based on the first data.

公开(公告)号：US11374968B1

公开(公告)日：2022-06-28

申请号：US16909176

申请日：2020-06-23

Applicant: Amazon Technologies, Inc.

Inventor： Brendan Cruz Colón ,  Jason L Thalken ,  Adam Edward Powers ,  Manraj Tatla ,  Lev Ufimtsev

IPC: H04L29/06 ,  H04L9/40

Abstract: Devices and techniques are generally described for fraud detection. In various examples, a first plurality of requests are received over a first time period. In at least some examples, the first plurality of requests may be requests to access a first service. A hierarchical data representation comprising an ordered set of values may be determined for each request of the first plurality of requests. A first subset of the first plurality of requests may be determined. The hierarchical data representation associated with each request of the first subset may include fewer than a threshold number of value substitutions relative to each other hierarchical data representation of the first subset of the first plurality of requests. Access to the first service may be prevented by subsequent requests associated with the first subset of the first plurality of requests.