What is the reason i see fake referral in my analytic ? Most of the referral on Porn sites. I am sure i don't create any back links for that site. So please help me how to stop and what is the reason .
ok, start with a multi-year report showing just hostnames (Audience > Technology > Network > hostname), then confirm that each of them is either valid, or invalid spam.
someone is try to harm the ranking of your website with bad links. if some links got mentioned in Webmaster Tools, use Disavow tool to remove them
Some one is doing negative SEO for your website. It seems that these links are intentionally created to harm your website in terms of rankings and backlinks. Use disallow tool to remove this backlinks and send a request from Webmaster Tools for indexing your website.