In Firefox, which will form the basis of the Firefox 70 release, support for strict site isolation mode, developed under the code name . When the new mode is activated, pages from different sites will always be loaded in separate memory processes, each using its own sandbox. The process separation will occur not by tabs, but by domains, allowing additional isolation of external scripts and iframe content. To enable the strict isolation mode, launch Firefox with the option "--enable-fission" or set the variable "fission.autostart=true" in about:config.
In Firefox 70, there is also a transition to using and a name change from Firefox Quantum to Firefox Browser.
Source: opennet.ru
