Amazon has been in the news regarding their suing people who write fake reviews of their products. A recent article in the New England Journal of Medicine describes cases where authors supply fake names and emails when a journal to which they have submitted a publication asks for suggested reviewers. These emails belong to the author, who then writes fake reviews so the article gets accepted.
I don’t there if there is a connection but in the past year or so, I get an email about once a week from different journals asking me to submit an article. I assume that many people gets these emails.
And don’t forget this site, which allows one to generate a fake paper.