Safari 13.4 on iOS and 10.15.4 on macOS Includes Full Third-Party Cookie Blocking

Apple just announced that Safari in macOS 10.15.4 and iOS and iPadOS 13.4 will blocks all third-party cookies in Safari by default. Cookies for cross-site resources are now blocked by default across the board, so online advertisers and analytics firms that rely on browser cookies to track users as they visit different sites across the internet will have a hard time getting that data. This should also prevent sites from using login fingerprinting or even the state of your anti-tracking prevention to watch your behavior. It should also thwart cross-site request forgery attacks, and prevents the use of auxiliary third-party domains to identify users.

After Tor Browser, Safari become the second browser to block all third-party cookies by default for all its users. Chrome plans to achieve this by 2022.