Microsoft’s Edge web browser has its own vulnerability research team, and it’s currently experimenting with a new feature that “challenges some conventional assumptions,” but could result in a much more secure browsing experience. It’s called “Super Duper Secure Mode.”
By turning off JIT, roughly half the security bugs that need fixing in V8 are no longer relevant, which means an automatically more secure browsing experience and fewer security patches to install. But what about performance? JIT exists to speed up your browsing experience, after all.
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This doesn’t sound like great news on the performance front, but as Norman explains, the lower performance may be more than offset by the security improvements. He also points out that having JIT enabled only benefits the user in certain scenarios, for example, are you playing a game in your browser or just viewing a blog post?
For now, Super Duper Secure Mode is just an experiment at Microsoft, but Norman hopes it will lead to a way to “enable these mitigations intelligently based on risk and empower users to balance the tradeoffs.” If you would like to try it out for yourself, it’s located under edge://flags in Edge Canary, Dev, and Beta.
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