JavaScript optimisations like JIT require being able to mark sections of memory as executable, and this has historically been a source of security vulnerabilities
So being able to completely disable these optimisations is great from a defence-in-depth perspective
It’s very possible for a browser app on Android to implement the same safety switch, but I don’t believe any have to date
That Privacy Browser app you have linked uses the built-in webview in Android, which uses V8, and I’m not sure it even has such a switch
People who are at especially high risk will likely know who they are and just leave Lockdown mode enabled 24/7
If you’re a journalist, a lawyer, an activist, a refugee, a whistleblower, or a woman trying to get healthcare, then I’d recommend keeping Lockdown mode enabled as much as possible
JavaScript optimisations like JIT require being able to mark sections of memory as executable, and this has historically been a source of security vulnerabilities
So being able to completely disable these optimisations is great from a defence-in-depth perspective
It’s very possible for a browser app on Android to implement the same safety switch, but I don’t believe any have to date
That Privacy Browser app you have linked uses the built-in webview in Android, which uses V8, and I’m not sure it even has such a switch
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People who are at especially high risk will likely know who they are and just leave Lockdown mode enabled 24/7
If you’re a journalist, a lawyer, an activist, a refugee, a whistleblower, or a woman trying to get healthcare, then I’d recommend keeping Lockdown mode enabled as much as possible
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