Quote:Mozilla plans to launch cryptomining and fingerprinting protection in Firefox 67 to improve user privacy.

Cryptomining and fingerprinting protection block JavaScript cryptominers and certain attempts by websites to fingerprint the user.

The organization revealed in 2018 that it had plans to improve privacy in Firefox. Mozilla added content blocking options to Firefox 63 -- an update of the browser's tracking protection functionality -- and that it wanted to add more protective features to future versions of Firefox.

If things go as planned, Firefox 67 will feature options to block JavaScript cryptominers and certain fingerprinting attempts.

Cryptominers use the resources of the connecting device to mine cryptocurrency; this leads to an increase in CPU activity and power consumption. Depending on how the miner is configured, it may slow down the entire system and all operations on it as well.

Fingerprinting protection is not a new feature. Fingerprinting refers to techniques to create user profiles for tracking using information provided by the connecting browser and device, and certain scripts if permitted to run. Mozilla introduced a preference to block some fingerprinting methods in Firefox 41.

Full reading: https://www.ghacks.net/2019/02/05/firefox-67-cryptomining-and-fingerprinting-protection/