Unrelated to the article, but I've never heard of defector before, and I spend the last hour crawling through and reading a couple articles. Seems like a fantastic little site (and apparently worker owned?). I don't care much about most of the sports articles, but the other stuff is great. Thanks for posting!
schnapsidee
My little conspiracy theory on this: I wouldn't be surprised if every intelligence agency in Europe knew how did it, but no one is going to tell, and we're not going to find out for years.
An attack on critical infrastructure like this is essentially an act of war, and nobody in Europe wants to escalate this conflict any more by admitting they know who's responsible.
If it was Ukraine, it would result in public outcry, and we'd basically be forced to cease any military support. If it was Russia, it's an act of war and there'd be public pressure in the other direction, maybe even enough to make us officially declare war. If it was the US, there'd be pressure for at the very least some pretty severe diplomatic consequences.
Nobody in European governments wants any of those results right now. Everybody is content to just leave it be and an article like this pointing blame at one of the three every couple of months is the only thing we'll hear on it until it gets declassified in 50 years when it doesn't matter anymore.
This looks pretty good, and I wouldn't mind paying for search, but it seems really pricy. I've never counted how many searches I do, but it's definitely more than 10 a day. $10 a month seems like a lot for just search...