[gcp]

One major weakness of Firefox, relative to Chrome and Edge, is its use of sandboxing and process isolation to limit the impact that security flaws can have. Next year Mozilla will be working to improve these areas.

Firefox has been shipping with a sandbox for a while, let alone e10s. Is that an old post?

[majewsky]

It is not a binary choice; there are sandboxes and then there are sandboxes. For example, a VM is a stricter sandbox than a container is a stricter sandbox than a chroot is better than nothing.

[gcp]

For sure. But he doesn't go into any details where he think the advantage would lie, which I think conflicts with calling it a "major weakness".