Mozilla today announced that its Firefox browser will soon by default automatically block all attempts at cross-site tracking.
There are three parts to this strategy. Starting with version 63, which is currently in testing in the browser’s nightly release channel, Firefox will block all slow-loading trackers (with ads being the biggest offender here). Those are trackers that take more than five seconds to load.
Starting with Firefox 65, the browser will also strip all cookies and block all storage access from third-party trackers. In addition, Mozilla is also working on blocking cryptomining scripts and trackers that fingerprint users. As usual, the timeline could still change, depending on how these first tests work out.