Re: Mitigation: #1 infection vector?
"Interface is not as nice as the previous verison, but it does work."
The interface is genuinely terrible -- it "guesses" what scripts to allow if you don't have a rule, and doesn't inform you about them in the icon (i.e., no partial "no" symbol over the "S" as in the old version of Noscript).
On the other hand, the old version of Noscript does work on Firefox 52.5.3, contrary to what Mage has stated.
(I'm using the 64-bit version, in case that's a factor.)