“Unknown” in StatCounters’s language probably means an unrecognized User-Agent string from a browser. Usually, that’s remedied in a few weeks and life carries on. What’s “Unknown” in Russia?
By now we should have it revealed, but no, it’s still “Unknown”. Therefor, I feel entitled to speculate this is Putin’s GNU/Linux… 😉 Putin signed that proclamation back in 2010 and it had a deadline of 2015, this year, so… Russia responded to the first sanctions over Ukraine by announcing a move to GNU/Linux, FLOSS and Postgresql in the Ministry of Health back in 2014, just when “Unknown” took off… Who needs salesmen when you have tyrants? It’s a small world and one action over here gives another reaction over there. It’s all good, I hope.