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I have seen a lot of anger about and criticism of @mozilla's new #adtech attribution system introduced in #Firefox 128. I totally understand why people are worried about this but I'd be curious if anyone has provided *technical* reasons for why the proposed attribution system isn't in fact #privacy-preserving or other reasons why it's bad (beyond "Firefox shouldn't do #ads" or "opt-out is not enough").
I mean there are good reasons to oppose #advertising as such (including online) but, if one acknowledges that ads play at least some legitimate role in financing online services, isn't Mozilla's proposal a good attempt in building a #TrackingFreeAds system? If not, why (real question)?
@ilumium The problem is that most real-world privacy threats from advertising are at the group level, not the individual level. Tracking at the group level (with all the interesting math properties of "privacy-preserving" systems) can still help
* match scammers to likely victims
* enable price discrimination
* make housing and job ads disappear for members of protected groups
The math in the new #firefox ad feature is neat but doesn't address the fundamental issues
@dmarti Thanks a lot, very good point indeed!