Setting up captcha for Russian visitors seems to have stopped it actually.
Setting up captcha for Russian visitors seems to have stopped it actually.
We are experiencing exactly the same bot traffic from Russia. I don't know if it does any harm to our site, I guess, no, but it definitely messed up Analytics. It goes on for about 1-2 weeks. On the first day, the (bot) traffic was coming from all over the world, then only from Russia. What I could do was set a filter in Analytics to not show any traffic from Russia. I couldn't find out a better solution, but since then I'm happy.
By the way, it all started around that time when I refused some SEO Guru's offer. It might be some sort of revenge from them, but I'm not sure.
I don't think that it can hurt the site really. Anyone can buy bot traffic on the internet and send it on any site. If Google is so smart that it almost understands articles, then it should be smart enough to recognize false traffic too. And they should know that everyone can send bots for competitors.