"Apple believes there has been a way for advertisers to track how well their ads go beyond gassp ) to destroy user protection," says John E Dunn for Sophos. "It sounds like a high order , but according to John Wilander, WebKit engineer and architect of Apple's Intelligent Tracking Prevention (ITP), a technology called Privacy Preserving Ad Click Attribution is added as an experimental feature to the Preview 82+ of the Safari browser. "
" According to Wilander, the problem is not advertising per se, but the feeling that web surveillance has become about not only understanding what users do but who they is "Writes Dunn." Apple's solution is a compromise ̵
" Instead of advertisers registering this data in the form of pixel and cookie tracking, Safari & # 39 ; 's WebKit engine would do it for them instead, "writes Dunn." And unlike today's web, no "opaque third parties" should see ad deployment data, only those sites visited by the user who generated click-through. "
Read more in the whole article here.  MacDailyNews Take: Time will tell if this will work, please hope it will help the user's privacy.
John Wilander writes via WebKit Blog:
Today presents we are a new technology to allow the allocation of ad clicks online while protecting privacy. We used the following principles when designing this technology:
• Users should not be uniquely identified across sites for ad click writing. This means that the combined data for an ad click and a conversion should not be attributed to a single user on a scaling scale. To achieve this, our design has the following features:
– Up to 64 ad campaigns can be measured in parallel per site where ads are placed and advertiser. This low number means that ad campaigns cannot be converted into user identifiers.
– Up to 64 conversion events can be separated on the advertiser's own site. This means that conversion IDs are also limited from being converted into user identifiers.
• Only websites that users visit should be involved in the measurement of ad clicks and conversions.
This means that opaque third parties will not receive ad clicks on attribution reports and we enforce it by requiring the ad link to be part of a first-party website, and by reporting only on which first-party website a conversion occurred.
• The browser should act on behalf of the user and do their best to maintain privacy while reporting ad click writing. We achieve this by:
– Sending attribution reports in a dedicated private reading mode, even if the user is in regular browser error.
– Permission of data as cookies for reporting purposes.
– Delays reports randomly between 24 and 48 hours.
– Don't Support Privacy Keep Ad Click Attribution at all when the user is in private browsing mode.
• The browser provider should not learn about the user's ad clicks or conversions.
For this reason we have designed the function to do all the work on the device. The browser provider does not see any of the ad text attribute data.
Critically avoids our solution to trust some of the parties involved – the ad network, the seller, or other intermediaries – and severely limit data entropy
Apple Launches New Ad Tracking Privacy Feature – May 22, 2019