However, as we approach 2025, with growing concerns about online privacy and data protection, Mozilla believes that DNT is no longer an effective privacy measure. Many websites ignore the DNT signal. Therefore, Mozilla has removed the DNT signal from Firefox version 135.
…
Mozilla believes that privacy preference is not honored by websites and that sending the Do Not Track signal may impact your privacy. The company has updated Firefox’s Do Not Track help support page to confirm that.
…
The company recommends using the Global Privacy Control setting as an alternative to prevent websites from tracking user data.
…
…