Firefox continues to take steps to ensure privacy for users. As of this Tuesday (3), the browser will by default block third-party tracking cookies and cryptocurrency miners present on websites.
Released with Firefox 69, the solution prevents companies from creating user profiles from their activity on the internet and, thus, showing targeted ads, for example. The default blocking of third-party crawlers has been around since June, but it was only valid for new browser users.
Today, 20% of Firefox users adopt the block, which takes into account the list produced by Disconnect, a protection tool against trackers. Mozilla’s expectation is that, now, blocking is enabled for 100% of users.
The blocker against crawlers started to be offered in Firefox 42, released in 2015. In that version, the browser had a simpler block that prevented ads and social media buttons only in anonymous mode.
In Firefox 57, released in November 2017, the option is no longer exclusive in anonymous mode, but was not yet enabled by default. In October 2018, Firefox 63 won the block against third-party cookie tracking.
The blocking of these elements by default announced in Firefox 69 does not prohibit cookies from the website itself, which allow to keep users connected to their accounts, for example.
Third-party tracking protection is represented by the shield icon in the address bar. When selected, it allows you to indicate what is being blocked and create exceptions for some sites.
Protection against cryptocurrency miners
In addition to third-party tracking cookies, Firefox 69 also started to block cryptocurrency miners by default. The elements are included on websites to favor third parties, but they slow down and increase the device’s battery consumption.
With the new version of the browser, users also gained the option to prohibit digital identity trackers, which are able to capture the settings of a device. The feature, however, only works when content blocking is in “Strict” mode.