Online tracking: A 1-million-site measurement and analysis is the largest and most detailed measurement of online tracking to date. We measure stateful (cookie-based) and stateless (fingerprinting-based) tracking, the effect of browser privacy tools, and "cookie syncing".

This measurement is made possible by our web measurement tool OpenWPM, a mature platform that enables fully automated web crawls using a full-fledged and instrumented browser.

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Sites with canvas-font fingerprinting scripts

In a crawl conducted on January 2016, these websites were found to include scripts which use the Canvas API to enumerate a user's fonts for fingerprinting on their homepages.