[hyperman1]

What is this 'DLL blocking' thing? Has firefox some way to boot unwanted DLLs out of its address space in some way?

[shakna]

They've had a way to blacklist loading DLLs for a very long time [0], by patching the call that loads DLLs.

That rather basic approach got a little bit more sophisticated in 2019 as well - following an approach that Chrome took.

[0] https://bugzilla.mozilla.org/show_bug.cgi?id=524904