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Does Firefox download information about every ad that advertisers have paid for, and then match against local data to decide which ad to serve?

If not, when it queries to find out which ads to serve, what data does is sent with that query (or prior to that query)?




Firefox has done a lot of work on these problems. I don't have it in front of me, but they described in detail what they do.


I haven't been able to find any documentation of this, other than "we acquired Anonym, which claims to send the data to trusted execution environments".



I'm sure the internet police's thorough investigation into themselves has shown they are doing nothing wrong.


I don't know what that's based on or means, but they do have the mission of protecting privacy and this would be a core contribution to that:

https://www.mozilla.org/en-US/advertising/




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