The more interesting, and perhaps more convoluted, update was that Apple is updating the WKWebView class. Tracking prevention in all iOS and iPad browsers I recommend you visit the Safari page on for a more detailed walkthrough of what WebKit does by default, and what is behind Intelligent Tracking Prevention’s flags. Finally, Safari does not block requests - it strips them of the capability to access cookies or parse referrer headers, etc.This classification is still algorithmic and still based on the sites the user visits, and what types of cross-site requests these sites do. If a domain is listed in the report, it does not mean that the domain has been flagged by WebKit’s Intelligent Tracking Prevention.Since WebKit blocks all access to cookies in third-party context, the full list of “prevented” domains comprises all the cross-site requests done from the sites the user visits, not just those listed in the Privacy Report.and ) have been prevented from accessing the user’s browser storage, among other things. The report highlights how some of the most prominent tracking domains (e.g.It uses DuckDuckGo’s Tracker Radar list to enumerate which known tracking-capable domains have been receiving HTTP requests from the sites the user has visited.The Privacy Report is available in the Safari 14 browser across Apple’s operating systems (macOS, iOS, iPadOS).Let’s recap this feature as clearly as possible: This prompted me to write an article on the topic in an effort to stem the tide. Case in point: When the release was foreshadowed in WWDC, it led to a tidal wave of misinformation spreading on the web. I’m worried this Privacy Report only serves to confuddle and obfuscate rather than to illuminate and educate. If this is difficult to follow, I don’t blame you. Nor are WebKit’s ITP measures applied to these domains automatically (I repeat: WebKit does not use blocklists - it classifies domains algorithmically). The purpose of this approach is without a doubt to just show how the biggest trackers on the web have been prevented from cross-site tracking, but the measures are not limited to just these domains. The Privacy Report means, quite simply, that WebKit’s global tracking protections, such as truncating all cross-site referrers and blocking all cookie access in third-party context have been applied to all the cross-site HTTP requests sent from the site, including but not limited to those shown in the Privacy Report. So the Privacy Report is a bit misleading. The decision of whether or not a domain should be “flagged” as having tracking capabilities is done based on the user’s browsing behavior and not against a domain blocklist. WebKit’s ITP is algorithmic and on-device. The funky thing is that these domains might not actually have been flagged by Intelligent Tracking Prevention yet. To put it in another way - if the website is making requests to domains in DDG’s Tracker Radar list, then those domains will be listed in the Privacy Report. What does that mean? It means that the Safari browser has detected HTTP requests to the listed domains, and that the listed domains are found in DuckDuckGo’s Tracker Radar lists. The first thing to note is the terminology.ĭ was prevented from profiling you across N websites.
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