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So this, from Firefox, is fucking toxic: https://mstdn.social/@Lokjo/112772496939724214
You might be aware Chrome— a browser made by an ad company— has been trying to claw back the limitations recently placed on ad networks by the death of third-party cookies, and added new features that gather and report data directly to ad networks. You'd know this because Chrome displayed a popup.
If you're a Firefox user, what you probably don't know is Firefox added this feature and *has already turned it on without asking you*
I can already see how Advertisers AND Websites will collude and break this one.
Specifically placed ads; targeted at specific website pages which a majority of their target grouping will visit.
Generate an ad that will specifically reside on a page deep inside of the site; think 4+ clicks deep; which is intensely personalized to their target. 1
Ad will trigger; register "Impression" and be boxed up into Differential Privacy set by the DAP.
Since that's the only ad targeted for that specific page, any impression is an answer of 1 or 'True'.
Through microtargeting of these deep pages they can learn a lot about what people do online and could potentially break Differential Privacy.
1 - In this example the URI being targeted could be something like https://www.example.com/zhuli/do/the/* in such a way that when you visit https://example.com/zhuli/do/the/thing/order.php is always recorded.
In theory this could be defeated easily if a fork of Firefox wanted to send lots of noise or someone decided to emulate many Firefox clients with false information.
I can already see how Advertisers AND Websites will collude and break this one.
1 - In this example the URI being targeted could be something like
https://www.example.com/zhuli/do/the/*in such a way that when you visithttps://example.com/zhuli/do/the/thing/order.phpis always recorded.https://datatracker.ietf.org/doc/html/draft-ietf-ppm-dap#name-security-considerations
In theory this could be defeated easily if a fork of Firefox wanted to send lots of noise or someone decided to emulate many Firefox clients with false information.