Google's alternative proposal, part of its "Privacy Sandbox" initiative, calls for an identifier field capable of storing 64 bits of data – considerably more than the integer 64.Īs the Electronic Frontier Foundation has pointed out, this enables a range of numbers up to 18 quintillion, allowing advertisers to create unique IDs for every ad impression they serve, information that could then be associated with individual users. Hill, uBO's creator, recently confirmed to The Register that's still the case.Įven if Chrome were to implement a DNS resolution API, Google has made it clear it wants to maintain the ability to track people on the web and place cookies, for the sake of its ad business.Īpple's answer to marketer angst over being denied analytic data by Safari has been to propose a privacy-preserving ad click attribution scheme that allows 64 different ad campaign identifiers – so marketers can see which worked. "uBO is now equipped to deal with third-party disguised as first-party as far as Firefox's browser.dns allows it," Hill wrote, adding that he assumes this can't be fixed in Chrome at the moment because Chrome doesn't have an equivalent DNS resolution API.Īeris said, "For Chrome, there is no DNS API available, and so no easy way to detect this," adding that Chrome under Manifest v3, a pending revision of Google's extension platform, will break uBO. Firefox supports an API to resolve the hostname of a DNS record, which can unmask CNAME shenanigans, thereby allowing developers to craft blocking behavior accordingly. Two days ago, uBlock Origin developer Raymond Hill deployed a fix for Firefox users in uBlock Origin v1.24.1b0. The technique is also discussed in a 2010 academic research paper, "Cookie Blocking and Privacy: First Parties Remain a Risk," by German Gomez, Julian Yalaju, Mario Garcia, and Chris Hoofnagle. Using DNS records to make a third-party domain appear to be first-party was documented previously in a 2014 paper by Lukasz Olejnik and Claude Castelluccia, researchers with Inria, a French research institute. Mozilla says Firefox won't defang ad blockers – unlike a certain ad-giant browser READ MORE Aeris added that DNS delegation clearly violates Europe's GDPR, which "clearly states that 'user-centric tracking' requires consent, especially in the case of a third-party service usage."Ī recent statement from the Hamburg Commissioner for Data Protection and Freedom of Information in Germany notes that Google Analytics and similar services can only be used with consent. In a conversation with The Register, Aeris said Criteo, an ad retargeting biz, appears to have deployed the technique to their customers recently, which suggests it will become more pervasive. This extension can store an unlimited amount of client-side data.As Eulerian explains on its website, "The collection taking place under the name of the advertiser, and not under a third party, neither the ad blockers nor the browsers, interrupt the calls of tags." But wait, there's moreĪnother marketing analytics biz, Wizaly, also advocates this technique to bypass Apple's ITP 2.2 privacy protections.Īs does Adobe, which explains on its website that one of the advantages of CNAME records for data collection is they " you to track visitors between a main landing domain and other domains in browsers that do not accept third-party cookies.".This extension can access your tabs and browsing activity.This extension will add a panel to the sidebar.This extension can manipulate privacy-related settings.This extension can access your data on some websites.This extension can access your data on all websites.So if ever you really do want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free. Without the preset lists of filters, this extension is nothing. Yet, even after adding Fanboy's two extra lists, hpHosts’s Ad and tracking servers, uBlock still has a lower memory footprint than other very popular blockers out there.Īlso, be aware that selecting some of these extra lists may lead to higher likelihood of web site breakage - especially those lists which are normally used as hosts file. Of course, the more filters enabled, the higher the memory footprint. More lists are available for you to select if you wish: Out of the box, these lists of filters are loaded and enforced: New uBlock Release: Commits to master since this release To install the developer build: Firefox: Click uBlock01.49. uBO works best on Firefox. It applies to the current web site only, it is not a global power button.įlexible, it's more than an "ad blocker": it can also read and create filters from hosts files. Usage: The big power button in the popup is to permanently disable/enable uBlock for the current web site. An efficient blocker: easy on memory and CPU footprint, and yet can load and enforce thousands more filters than other popular blockers out there.
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