There is no actual evidence presented in the article
You're so full of 💩.
For one example, they give examples of several websites, including one called DC Weekly, they explain that the sites use fabricated authors, lorem ipsum template text, files uploaded in Russian to sites presenting itself as an American site.
In their report on DC Weekly, they show that the IP address associated with DC Weekly is John Mark Dougan, who lives in Russia. So there's an example, for one.