Apple Safari adds a feature to block user tracking by default

With the release of Safari 13.1 on March 24, the privacy feature "Intelligent Tracking Prevention" [ITP] has been updated, and Safari now blocks all third-party cookies by default. Was.


Provided by: Nobbby

This prevents online advertising and analytics companies from using browser cookie files to track users across sites.

However, Apple states that the company has already blocked most third-party cookies used to track users, so there is not much change in practice.

“ This may seem a bigger change than it really is, but ITP has had so many restrictions since its first release in 2017, '' said Apple software engineer John Wilander. Already, most third-party cookies were blocked. "

Second browser to block all third party cookies

Safari has become the second browser to block all third-party cookies by default for all users [the first was "Tor"].

However, Google first pushed browser makers to block third-party cookies,Blog posts posted in May 2019That was it.

In this article, Google announced plans to block third-party cookies by default in Chrome and the open source project Chromium. Chromiumu is also the basis for several other browsers.

In early February 2020, the company launched a third-party cookie blocking feature ["Same Site cookies]] Has been released for Chrome 80, but this feature is available to all Chrome users.Expected to be 2022.

Microsoft's Edge, which is based on Chromium, is gradually blocking third-party cookies, but not all users have this feature turned on by default.

Apple's decision does not block all user tracking in Safari. The only thing blocked is a tracking technique that embeds a cookie file in Safari and checks it repeatedly to identify users who move between sites.

ほ か Other user tracking methods that use browser fingerprints and the like are likely to continue to be available in the future.

に つ い て What does this change and what impact it has on developers and website operators?Blog posts from the WebKit teamPlease see.

This article is from overseas CBS InteractivearticleWas edited by Asahi Interactive for Japan.

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