Firefox Fission aims to thwart nasty Spectre-style attacks

guest · Feb 5, 2019

Firefox Fission aims to thwart nasty Spectre-style attacks
The "massive" project's first milestone should be complete this month
February 5, 2019
https://www.cnet.com/news/firefox-fission-aims-to-thwart-nasty-spectre-style-attacks/

With a Firefox effort called Project Fission, Mozilla is moving ahead this month with a plan to keep a major class of computer attacks at bay.

Fission has been underway for months. But Mozilla plans to take its first concrete step later this month with a release called Milestone 1, said Nika Layzell, a Firefox platform engineer, in a blog post Monday.
"We aim to build a browser which isn't just secure against known security vulnerabilities, but also has layers of built-in defense against potential future vulnerabilities," Layzell said.

Specifically, Project Fission enables a technology called site isolation that can split even individual websites into separate computing processes.
More memory
One drawback of site isolation is that it requires more memory. [...] Mozilla has a related project called Fission Memshrink.
"We are working to ensure Firefox users continue to experience best-in-class memory usage and performance," Mozilla said in a statement Tuesday.
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guest · Aug 11, 2019

Mozilla says Site Isolation in Firefox (Project Fission) is now available for Testing
August 10, 2019
https://techdows.com/2019/08/mozill...ect-fission-is-now-available-for-testing.html

Mozilla’s Project Fission to run cross-origin iframes in separate content processes is now available for testing in Firefox 70 Nightly.

Google Chrome already has Site Isolation feature available and integrated into the browser. This has been done after Spectre and Meltdown attacks were discovered. Mozilla too keen on bringing the full site isolation feature to Firefox browser, the company has announced about the Project Fission in February 2019 in regards to that.

In the second newsletter of Fission, the company notes “It’s now possible to turn on Fission in Nightly builds of Firefox by setting fission. autostart pref to true.”
Mozilla’s Lika Nayzell who works on Site isolation says “When Fission is enabled, each cross-site iframe is loaded in the different content process, meaning lots of different processes participate in drawing a single tab.”
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Without any ado, here is how you can turn on Fission in Firefox Nightly if you want to test the feature right away

1. Visit about:config
2. Search for “fission”, click on toggle button for the “fission.autostart” pref to change its value to “true”.
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