The nonprofit Noyb has filed a complaint against Mozilla, claiming that Firefox’s new Privacy-Preserving Attribution (PPA) feature breaches Europe’s GDPR rules. PPA, introduced in Firefox 128, tracks which websites display ads and how users interact with them, creating reports for advertisers.
Mozilla argues this data is anonymized using differential privacy techniques, but Noyb criticizes the feature for being enabled by default and lacking transparency in the privacy policy.
Noyb believes this tracking tool, even with privacy measures, still violates GDPR regulations on data transparency and consent. Mozilla responded that PPA is part of a limited test aimed at replacing invasive ad practices, emphasizing its cryptographic safeguards.
Users concerned about the feature can disable it by adjusting Firefox’s privacy settings. Firefox already restricts tracking cookies and offers privacy-focused alternatives to traditional browsers. For those seeking even stronger protections, options like Ghostery provide enhanced privacy on Firefox’s platform.
