Mozilla, the company behind the Firefox web browser, has quietly removed its long-standing promise to never sell users’ personal data, sparking concern among its privacy-conscious user base.
Until recently, Mozilla’s website boldly declared: “Does Firefox sell your personal data? Nope. Never have, never will.” This clear commitment to privacy has now disappeared from the company’s website, along with other similar promises.
The change didn’t go unnoticed. Users quickly spotted the modifications and voiced their displeasure across online platforms including GitHub and Reddit. The backlash focused not only on the removed promises but also on new terms of use that raised eyebrows.
The updated terms stated that when users upload or input information through Firefox, they grant Mozilla “a nonexclusive, royalty-free, worldwide license to use that information.” Many users interpreted this as giving the company broad rights to their personal data.
Mozilla’s Data Rights Grab Sparks User Revolt
One frustrated user commented in Mozilla’s discussion forum: “This isn’t a question of messaging or clarifying. You cannot ask your users to give you these broad rights to their data. This agreement, as currently written, is not acceptable.”
In response to the growing criticism, Mozilla has already begun walking back some of the changes. The company updated the controversial license language to clarify that users “give Mozilla the rights necessary to operate Firefox” and that this “does not give Mozilla any ownership in that content.”
Mozilla explained the removal of its “never sell data” promise by pointing to legal definitions of data sales in certain jurisdictions. According to Mozilla, the “legal definition of ‘sale of data’ is extremely broad in some places,” which forced them to “step back from making the definitive statements you know and love.”

The company insists that its fundamental approach to privacy hasn’t changed. “Mozilla doesn’t sell data about you (in the way that most people think about ‘selling data’), and we don’t buy data about you,” the updated FAQ states. Mozilla claims it takes steps to protect user information, such as stripping identifying information and using privacy-preserving technologies.
One specific concern involves location data. Mozilla acknowledged it may receive “location-related keywords” from user searches and share these with partners to provide “recommended and sponsored content.” The company maintains this data is anonymized and that users can disable this functionality.
Firefox Privacy Changes Draw User Criticism
Not all users are convinced by these explanations. One skeptical user responded: “That’s a load of crap and you know it. ‘Basic functionality’ is to download and render webpages.”
The controversy highlights the delicate balance tech companies face between commercial viability and privacy commitments. Mozilla has positioned Firefox as a privacy-focused alternative to browsers like Chrome, making these policy changes particularly sensitive for its user base.
For many Firefox users, the browser’s appeal has been its strong stance on privacy in an era of increasing data collection. Whether Mozilla’s clarifications and revisions will be enough to restore user trust remains to be seen.
The company continues to seek feedback from users as it navigates these changes, but the incident serves as a reminder that in today’s digital landscape, privacy policies, and their interpretations can significantly impact user trust and loyalty.