Apple has released an update to its Safari browser that blocks third-party cookies by default. The move follows Google s announcement last May that it would do the same in Chrome by 2022. The feature in Safari also disables login fingerprinting, which allows a website to invisibly detect where someone is logged in and it works in any browser without blocking cookies, Apple’s WebKit engineer John Wilander said. Wilander called Safari the first mainstream browser to do this, acknowledging that the less widely used Tor browser already has.
Source: https://threatpost.com/apple-safari-blocks-cookies-ad-targeting/154124/