Mozilla, the company behind the Firefox browser, is teaming up with nonprofit newsroom The Markup to launch a study that will analyze how Facebook tracks data for targeted ads and tailor content recommendations to users.
The study will use tools provided by Rally, a privacy-focused data-sharing platform created by Mozilla in June, Mozilla announced Monday.
Firefox users can participate in the “Facebook Pixel Hunt” study via Rally. The study will collect data sent to Facebook pixels during user browsing, the URLs of web pages viewed by users, the time users spend browsing pages, and the presence of Facebook login cookies in users’ browsers .
Mozilla said the study aimed to uncover questions such as what kind of data Facebook pixels collect, which sites share the data, what the data can reveal about people, and how Facebook tracks people.
The markup will use the data collected in the study to create investigative journalism around the type of information Facebook collects about users.
The study will continue until July 13.
Mozilla said the study will not share granular metrics about participants with third parties. Additionally, once the scan is complete, Mozilla said it will delete the raw data.
Report Markup will also only use aggregated and anonymized data in its reports.