公开(公告)号：US20230163978A1

公开(公告)日：2023-05-25

申请号：US17798604

申请日：2021-03-03

Applicant: Google LLC

Inventor： David Bruce Turner ,  Adrian John Isles ,  Philipp Helmut Pfeiffenberger

IPC: H04L9/32

CPC classification number: H04L9/3263 ,  H04L9/3247 ,  H04L9/3297

Abstract: This disclosure relates to a method for privacy-preserving web activity monitoring including receiving, from an application on a user device of a user, a request for digital content from a domain, assigning, to the application and at a first time, a randomized cohort constructed based on a randomly selected identifier and a timestamp indicating the first time at which the randomized cohort was assigned to the application, and providing, to the application and at the first time, (i) a digitally signed certificate corresponding to the randomly selected identifier and the timestamp and (ii) a unique public key and corresponding unique private key associated with the certificate, wherein the randomly selected identifier is also assigned to at least a threshold number of other applications executing on other user devices within a predetermined period of time of the assignment of the randomized cohort to the application.