Fine-grained sandboxing in Firefox 95 ↦
In Firefox 95, we’re shipping a novel sandboxing technology called RLBox that makes it easy and efficient to isolate subcomponents to make the browser more secure. This technology opens up new opportunities beyond what’s been possible with traditional process-based sandboxing…
Turns out using WebAssembly to isolate potentially-buggy code is a pretty big win:
Going forward, we can treat these modules as untrusted code, and — assuming we did it right — even a zero-day vulnerability in any of them should pose no threat to Firefox.
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