Any use of a zero-day risks burning it, and this was one of NSA's most potent zero-days. I imagine they used it rarely and wisely; probably trying other exploits first.
And so now it's in the hands of people who have no such foresight. Which means soon it will be mitigated. Which means that despite all the pain right now, in the long run Wikileaks actually may end up having kind of helped humanity.
It was fixed in a security patch one month before the Shadow Brokers leak. All computers affected by this ransomware outbreak (and WannaCry) were those who decided not to patch.
I suppose with the word "mitigation" kind of already having a connotation in the security community, I probably shouldn't have used it without making clear that I wanted the term to include its more banal implications such as "install the patch" and/or "get your systems off that old-ass OS!"
