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A comment on Building end-to-end security for Messenger – Engineering at Meta. Parent comment

Re:Building end-to-end security for Messenger – Engineering ... by cfiggers on Thursday December 07, 2023 @07:46AM (#38555724)
IIUC the Brave browser is already experimenting with this model. They promise[0] "privacy-preserving" ads to users AND targeting to advertisers:

"...when a Brave Ad is matched to you, it is done on your own device, by your own device, inside Brave itself. Your personal data never leaves your own device."

The mechanism is very similar to what you describe.

[0] https://support.brave.com/hc/en-us/articles/360026361072-Bra...

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Re:Building end-to-end security for Messenger – Engineering ... by londons_explore on Thursday December 07, 2023 @09:32AM (#38556741)
The problem is that the 'secret sauce' of ad targeting is that model that decides what you're most likely to click... Ad networks really don't want that model outside their data centers...

Alas, the GDPR might force a rethink on that when it gets enforced with teeth.

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